I need to delay data input through a RJ11 to serial input on start up of computer. Any Ideas? The data is a continious feed of weather data from my Peet Brothers weather station that goes to the internet. My problem is the data input causes the computer to go haywire on start up of computer. After the computer is started and program opens, I can then plug in the data feed and everything is ok..

Could be bad ignition switch or some other type electrical problem . Knowing how this system works on your vehicle is the key . The ignition switch is a low voltage input to the BCM - body control module . Depending on key position the BCM knows what relays to energize and what messages to send over the GMLAN serial data net work , PCM - engine computer . Hooking up a factory or some other type professional scan tool to view ignition switch inputs to the BCM , an checking for BCM DTC'S - diagnostic trouble codes .

Circuit Description
Moving the ignition switch to the START position signals the body control module (BCM) through discrete inputs from the ignition transducer that engine crank has been requested. The BCM verifies that theft is not active and sends a serial data message to the engine control module (ECM)/powertrain control module (PCM) requesting engine start. The ECM/PCM receives a 12-volt signal from the park/neutral position (PNP) switch or clutch pedal start switch notifying that it is safe to start the engine. There is a splice on this circuit in the fuse block-underhood that supplies power for the starter relay coil. The starter relay coil control circuit is then grounded by the ECM/PCM closing the switch in the starter relay suppling 12 volts to the S-terminal of the starter. Ground is supplied through the engine block.


Plus you need to under stand what power modding is , because the BCM is the power mode master . This will sound funny to someone who does not know about automotive electronics .
Serial Data Gateway
The body control module (BCM) in this vehicle functions as a translator between the High and Low speed GMLAN busses. The 2 communication protocols use the BCM to translate communicated serial data messages between the control modules over the 2 serial data busses.
Power Mode Master
This vehicles body control module (BCM) functions as the power mode master (PMM). Refer to Power Mode Description and Operation for a complete description of power mode functions.

Power to many of this vehicle's circuits are controlled by the module that is designated the power mode master (PMM). This vehicle's PMM is the body control module (BCM). The PMM controls which power mode (Run, Accessory, Crank, Retained Accessory Power, or Off) is active.

On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle, the PMM is the body control module (BCM). The PMM receives 3 discrete ignition switch signals to differentiate which power mode will be sent over the Serial Data circuits. The 3-wire Ignition Switch table below illustrates the state of these inputs in correspondence to the ignition switch position:
Relay Controlled Power Mode
The body control module (BCM) uses the discrete ignition switch inputs Off/Run/Crank, Accessory, and ignition 1, to distinguish the correct power mode. The ignition 1 circuit is also routed to the Run/Crank relay for relay controlled power feeds during the appropriate power mode. The BCM, after determining the desired power mode, will activate the appropriate relays for that power mode.

This may be a bad rear integrated control module. or connection or wiring to it.
REAR INTEGRATION MODULE (RIM)
The CTD system is an internal function of the rear integration module (RIM) which utilizes class 2 serial data and various switch input information to perform CTD functions. When the RIM detects an unauthorized entry, the RIM sends a message via the serial data circuit to the DIM to activate the horns and exterior lamps. The RIM has 5 basic modes. Disarmed, standby, delayed, armed, and alarm for operating the CTD system. The 5 modes transition from one step to the next in the following order:

When in the disarmed mode, ignition is OFF and any door is open the RIM commands the instrument cluster to flash the SECURITY indicator via the class 2 serial data circuit. The RIM has the CTD system in a disarmed mode until the following conditions are detected:

Ignition key turned to the OFF position
Any door open
Doors locked by either the power door lock switch or the LOCK button on the keyless entry transmitter

The RIM enters the standby mode when the above conditions are detected. In standby mode the RIM commands the instrument cluster to illuminate the SECURITY indicator via the class 2 serial data circuit. If all the doors are closed and the LOCK button on the keyless entry transmitter is used, the RIM enters the delayed mode.
When the last door is closed, the RIM enters the delayed mode for 30 seconds . In delayed mode the RIM commands the instrument cluster to illuminate the SECURITY indicator on steady via the class 2 serial data circuit.
After 30 seconds , the RIM enters the armed mode. In armed mode the RIM commands the instrument cluster to turn off the SECURITY indicator via the class 2 serial data circuit. Any forced entry activates the alarm mode.

.

Your best bet would be to take your vehicle to the dealer ! You have no idea of the complexity involved in the starting of this vehicle ! The computer contols and serial data network etc....
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the DIM. The PMM receives 2 signals from the ignition switch.
To determine the correct power mode the PMM uses the following circuits:
• Accessory voltage
• Run/Crank voltage

Table 1: 2-Wire Ignition Switch Table
The body control system consists of the following 2 modules:
• The Dash Integration Module (DIM)
• The Rear Integration Module (RIM)
Each of the 2 body control modules integrate a number of functional systems. Each module is connected to the class 2 serial data circuit, many of the control signals are implemented by class 2 messages.
Serial Data Messages
The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid PMM message until they can check for the engine run flag status on the serial data circuits. If the PMM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is True, indicating that the engine is running, the modules fail-safe to RUN. In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is False, indicating that the engine is not running, the modules fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals
Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid PMM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, battery positive voltage, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.


Honestly ,there is nothing you can do ! The dealer has the factory scan tool an service info. to diagnose this quickly . The only thing you would be able to do is guess as to what the problem is ,and it would be wrong .

It won't talk to you ? explain that . Is the battery an cable connections good ? Do the headlamps shine bright ? Does the theft light flash when trying to start the vehicle ? Do you know how complex your vehicle is ? The number of control module's on the vehicle , what GMLAN serial data communications are ? What happens when you turn the key to start ? The ignition switch is a low voltage input to the BCM - body control module system , the BCM turns on relays an sends messages to other modules to start the vehicle , turn thing's on etc... Why the GMLAN
The body control system consists of the following 2 modules:
?€¢
The dash integration module (DIM)

?€¢
The rear integration module (RIM)

Each of the 2 body control modules integrate a number of functional systems. Each module is connected to the class 2 serial data circuit, many of the control signals are implemented by class 2 messages.
Dash Integration Module (DIM)
The various dash integration module (DIM) input and output circuits are described in the corresponding functional areas as indicated on the DIM electrical schematics.
The DIM functions include the following:
?€¢
The cigar lighter relay control

?€¢
The class 2 communication requiring DIM interaction

?€¢
The exterior lighting control

?€¢
The headlamp washer control

?€¢
The hood ajar switch input w/export

?€¢
The horn relay control

?€¢
The interior lighting control

?€¢
The load management

Serial Data Messages The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid PMM message until they can check for the engine run flag status on the serial data circuits. If the PMM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is True, indicating that the engine is running, the modules fail-safe to RUN. In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is False, indicating that the engine is not running, the modules fail-safe to OFF-AWAKE. In this state, the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid PMM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, battery positive voltage, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open, or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
I'd say your best bet is take your vehicle to the dealer or some other qualified repair shop .

On GM vehicles starting back in mid 2000's , maybe even before that. They started using inputs to the body control module from the ignition switch, from there the BCM controls all vehicle systems .
Power Mode Description and Operation
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the body control module (BCM). The BCM uses 3 signals from the ignition switch. These are the Ignition 0, Ignition 1, and Accessory.
To determine the correct power mode the BCM uses:
?€¢
The state of these signals

?€¢
The sequence of switch closures received by the BCM

?€¢
The status of the engine run flag

The chart indicates the power modes detected and transmitted by the BCM:

Correct Ignition Switch Inputs
Ignition Key Position

Power Mode Parameter

Engine Running

Sampled Ignition Signal State

Accessory

Ignition 1

Ignition 0
OFF
Off-Awake or RAP
No
Inactive
Off
Off
UNLOCK
Unlock or RAP Unlock
No
Inactive
Off
On
ACC
Accessory
No
Active
Off
On
ON
Run
No
Active
On
On
START
Crank
No
Inactive
On
On
ON
Run
Yes
Active
On
On
Fail-safe Operation
Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the body control module (BCM) fail to send a power mode message. The fail-safe plan covers modules with discrete ignition signal inputs as well as those modules using exclusively serial data control of power mode.
Serial Data Messages The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid BCM message until they receive the engine status from the powertrain control module (PCM). If the BCM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is true, indicating that the engine is running, the modules fail-safe to Run. In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is false, indicating that the engine is not running, the modules fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid BCM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, B+, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
You would need a scan tool that can read data from the BCM . What may be the problem is a lose connector , these pin's at connectors are tiny and doesn't take much for one to become lose.

You need to take it to a qualified repair shop that has the diagnostic tool to check DTC'S - diagnostic trouble codes . You have no idea of the complexity of the electronic's . All computer controlled . Do you know what serial data communications netwoking is ?
003 Communications Diagnostics
Moving the ignition switch to the START position sends a 12-volt signal to the engine control module (ECM) to command starting. Battery voltage also travels through the switch side of the Run/Crank relay then through the clutch switch, if equipped with manual transmission, and on through the coil side of the Starter relay and then to the ECM. The ECM receives class 2 information from the vehicle theft deterrent (VTD) and transmission control module (TCM) to verify that all parameters are met for starting. When all parameters are met the ECM grounds the control circuit of the Starter relay closing the switch providing battery voltage to the starter solenoid through a 30 A Maxi-Fuse.
012 GM Class II Communications
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the dash integration module (DIM). The PMM receives 2 signals from the ignition switch.
To determine the correct power mode the PMM uses the following circuits:
• Accessory voltage
• Run/Crank voltage
Fail-safe Operation
Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the power mode master (PMM) fail to send a power mode message. The fail-safe plan covers those modules using exclusively serial data control of power mode as well as those modules with discrete ignition signal inputs.
Serial Data Messages
The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid PMM message until they can check for the engine run flag status on the serial data circuits. If the PMM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is True, indicating that the engine is running, the modules fail-safe to RUN. In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is False, indicating that the engine is not running, the modules fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals
Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid PMM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, battery positive voltage, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.

Sounds like one of the modules that makes up the BCM - body control module network is having a problem .Do you know anything about automotive electronics ? Serial communication networks ? Electrical systems ?
Table 1: 2-Wire Ignition Switch Table
The body control system consists of the following 2 modules:
• The Dash Integration Module (DIM)
• The Rear Integration Module (RIM)
Each of the 2 body control modules integrate a number of functional systems. Each module is connected to the class 2 serial data circuit, many of the control signals are implemented by class 2 messages.

The various DIM input and output circuits are described in the corresponding functional areas as indicated on the DIM electrical schematics.
The DIM functions include the following:
• cigar lighter relay control
• class 2 communication requiring DIM interaction
• exterior lighting control
• headlamp washer control
• hood ajar switch input w/export
• horn relay control
• interior lighting control
• load management
• low side temperature for HVAC compressor
• park key lock output
• power moding control over Class 2 serial data circuit
• reverse lockout solenoid control
• steering wheel controls input
• storage of the clock settings and, sending a message out on the class 2 serial data circuit in response to requests from other modules
• storage of vehicle options and configuration

When your driving your vehicle an the thing's you have listed above as stopping or going out but the engine keeps running . This is why
Discrete Ignition Signals
Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid PMM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, battery positive voltage, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.

The first step in diagnosing a problem like this would be to have the factory or professional scanner hooked up an check for DTC'S - diagnostic trouble code's .If no code's are found then looking wiring diagrams for the affected system's to see what they have in common , power feed , ground circuit etc.... Then the fun start's . May involve taking parts of the instrument panel apart to check wiring harnesses , connectors , ground connection's etc...
But without testing we'd be guessing . Gauge's that stop working , warning light's on the instrument cluster coming on sounds like a data network problem . The gauges get their info over the data network from the PCM - engine computer . The VSS - vehicle speed sensor , fuel level sending unit , oil pressure etc... are all inputs to the engine computer . They have no direct hook up to the instrument cluster .
This problem could be very simple in nature but could be like looking for a needle in a hay stack if you know what i mean . There are also electronic modules inside the doors , driver door module , passanger door module etc... these control the windows an the locks ,power mirrors etc...
Your best bet , take your vehicle to a qualified repair shop.

Check all main power feeds to all fuse centers (boxes) ! Do you know what a electrical distribution diagram is ? How to use a DVOM - digital volt ohm meter to test electrical circuits ?
Has no power, replaced shifter assembly ???? No power where ??? And why would you replace shifter assembly ???? What happens when you turn the key to on ? not start ,just on ? Insturment cluster lights up ?
Is the battery good ? Connections an cables ? Your going to need to check power at the battery ,fuse boxes etc.... Confirm there is B+ voltage somewhere !
Your best bet , take it to a qualified repair shop . You have no idea of the complexity of this vehicle ! Everything is contolled by computer ! The ignition switch is a input to the BCM - body control module , by these inputs the BCM will control the vehicle .
The body control module (BCM) has a bussed electrical center integrated into the housing. Body control relays and fuses are installed directly on the BCM, which simplifies wiring and junction blocks on the vehicle. The body control system consists of the BCM and its associated controls. Battery positive voltage is provided to the BCM from IBCM BATT 1 fuse and the IBCM BATT 2 fuse in the underhood fuse block. The module grounds are wired to ground G201, G203 and G305. The BCM is wired to the GMLAN High speed serial data buss, and the GMLAN Low speed serial data buss, as well as discrete input and output terminals to control the functions of the vehicle's body .
Serial Data Gateway
The body control module (BCM) in this vehicle functions as a translator between the High and Low speed GMLAN busses. The 2 communication protocols use the BCM to translate communicated serial data messages between the control modules over the 2 serial data busses.
Power Mode Master
This vehicles body control module (BCM) functions as the power mode master (PMM). Refer to Power Mode Description and Operation for a complete description of power mode functions.
Power to many of this vehicle's circuits are controlled by the module that is designated the power mode master (PMM). This vehicle's PMM is the body control module (BCM). The PMM controls which power mode (Run, Accessory, Crank, Retained Accessory Power, or Off) is active.
Serial Data Power Mode Master
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle, the PMM is the body control module (BCM). The PMM receives 3 discrete ignition switch signals to differentiate which power mode will be sent over the Serial Data circuits. The 3-wire Ignition Switch table below illustrates the state of these inputs in correspondence to the ignition switch position:

Relay Controlled Power Mode
The body control module (BCM) uses the discrete ignition switch inputs Off/Run/Crank, Accessory, and ignition 1, to distinguish the correct power mode. The ignition 1 circuit is also routed to the Run/Crank relay for relay controlled power feeds during the appropriate power mode. The BCM, after determining the desired power mode, will activate the appropriate relays for that power mode.
Run/Crank Relay
The run/crank relay control circuit is connected to a constant ground and is switched by the ignition 1 circuit or the body control module (BCM). The BCM, will in lieu of the ignition switch position, activate the Run/Crank relay during a remote start event. The Run/Crank relay supplies a power signal to the following circuits, when the a Run or Crank power mode is selected:
• Automatic transmission shift indicator
• Automatic transmission (A/T)
• Switched power feeds to the BCM
• Electronic brake control module (EBCM)
• Electronic ignition module (spark control)
• Electronic power steering module (EPS)
• Fuel injectors
• Powertrain control module (PCM)
• Park neutral position (PNP) switch

Do yourself a favor an take it to a qualified repair shop !

The link works for me DataWedge provides a convenient mechanism for non-scanning aware applications to receive data from embedded or connected data capture devices. It allows the user to capture data into any application that accepts keyboard input. It supports four types of Data Feeds: Barcode Scanners, RFID Tag Readers, MSR Readers and Serial Data Input. It provides user with text/hex data formatting and prefix/suffix facilities. Description

1. New Test and Log Display.
2. Improved DataWedge Startup Time for MSR and RFID
3. Gen2 RFID Support
4. Device enable/disable persistence over cold boot
5. Virtual Key Support in Prefix/Suffix
6. Performance improvements for MSR
7. Enable Serial Interface on startup
8. Support added for Event based Serial reading.
9. Delays regarding RFID are fixed.
10. Several Barcode character mapping issues fixed.

make sure some security software is not blocking your access

I salvaged an SOD14C and found this out by playing around with it.

the 6 pin RJ11 is wired as follows, holding the cable, connector up, cable hanging down with the pins facing you the pins count from left to right.
Pin 1 is green it is the Microphone +
Pin 2 is red it is the +12 Volts DC
Pin 3 is yellow it is the Speaker +
Pin 4 is the bare copper shield it is the common (-12 Volts DC, Microphone -, and Video -)
Pin 5 is whitish clear it is the Video +
Pin 6 is black it is the Speaker -
Hope this helps!