I need a brake light switch wiring diagram with color codes

The brake switch at the pedal does have six wires, but none go to the multifunction switch (on the steering column). The white wire with tan tracer goes to the combination flasher to be integrated with the turn signals/hazard lights. The combination flasher is under the dash next to the steering column and has a sixteen pin connector (ten of which have wires).

I would start looking for a grounded wire somewhere. it could be where the harness goes thru the firewall. You might want to get a color code from a dealer or online so you know what color wires are in the brake light circuit. I don't know what your level of ability is, but you'll need a tester you can get from Autozone or any parts place. You will need the tester to check each wire. You will be removing eac fuse until the light in the tester goes out. That will tell you what wire is grounded.

We do not have the wiring diagrams. But here is the red neck method, use a 12 volt test light probe tool (any parts stores for $5) and as a friend operates each light circuit, probe the connector or harness and see what lights up, then mark the wire color and what it does, brake lights, turn signals etc.

See your GM dealer they will print out a wiring diagram for you, Look at the brake switch under the dash, I,m pretty sure they have a couple of white wires and an orange. The wire harness runs along the roof on the L/F side, What we use to do is run temp wires to test and varify everything and then do it perminantly. Good luck Kirk fc6fc

Hello Mark.
In the brake lamp switch there are three switched circuits.
One that goes to the ECM one to your brake lamps and one to cruise control.
I suspect the circuit you are looking at that opens is for cruise control.
As you can see in the diagram for the Catera below.
For some reason the color of the wire for the output for the brake lamp is not shown although it indicates it's purpose. Eliminate the other colors and it will be that one.
If you require more assistance with the switch wiring let me know here in comments.
Thank you for using FixYa.

KL

1991 Ford F150

Vehicle Battery Positive Wire (+): Yellow
Vehicle Battery Positive Wire Location: Ignition Switch Harness
Vehicle Ignition Wire (+): Red/Light Green
Vehicle Ignition Wire Location: Ignition Switch Harness
Vehicle Second Ignition Wire (+): N/A
Vehicle Second Ignition Wire Location: N/A
Vehicle Accessory Wire (+): Gray/Yellow
Vehicle Accessory Wire Location: Ignition Switch Harness
Vehicle Second Accessory Wire (+): N/A
Vehicle Second Accessory Wire Location: N/A
Automobile Engine Starter Wire (+): Red/Light Blue
Automobile Engine Starter Wire Location: Ignition Switch Harness
Automobile Second Engine Starter Wire (-): N/A
Automobile Second Engine Starter Wire Location: N/A
Factory Anti-Theft System: None
Factory Anti-Theft System Type: None
Car Key Sense Wire (-): Black/Pink
Car Key Sense Wire Location: At Steering Column Harness
Car Neutral Safety Wire (+): N/A
Car Neutral Safety Wire Location: N/A
Car Tachometer Wire (-): Tan/Yellow
Car Tachometer Wire Location: At Ignition Switch Control Module in Driver Fender Well
Car Speed Sense Wire: Gray/Black
Car Speed Sense Wire Location: Pin #3 at PCM Mounted on the Firewall
Car Parking Lights Wire (+): Brown
Car Parking Lights Wire Location: At Headlight Switch or Driver Side Kick Panel
Car Brake Lights Wire (+): Green
Car Brake Lights Wire Location: At Brake Switch Above the Pedal
Car Reverse Lights Wire (+): Black/Pink
Car Reverse Lights Wire Location: At Switch on Transmission
Car Horn Wire (-): Blue
Car Horn Wire Location: At Steering Column Harness

Sorry friend, this is as far as i can go to tel you how to hot wire the ignition. But with the color codes you should be able to figure it out, Good luck and keep me posted.

you can either wire it straight or gm makes a connector that plugs into the drivers side floor . theres a box down there that has a cover over it and the gm connector plugs straight to it. but be careful because i have seen several times were gm wired it wrong the stop light plug is in the wrong spot.take a test light to ground touch each connector while pressing and releasing brake pedal the one that lights the light, is your stop light look on there connector and check to see if that plug is going to the red wire if not move the red wire to that spot. as for wiring it you have to do it this way. black wire goes to constent hot, white wire goes to constent ground , blue wire goes back to your trailer plug for your electric brake, and red wire as you know by now goes to the stop light.

this might help
1994 Toyota Pickup Car Security Wiring Diagram
Battery Constant 12v+ Positive Wire (+): White And White/Red
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness
Starter Positive Wire (+): Black
Starter Positive Wire Location: Ignition Switch Harness
Ignition Positive Wire (+): Black/Yellow
Ignition Positive Wire Location: Ignition Switch Harness
Second Ignition Positive Wire (+): Black/Yellow Or Black/Red
Second Ignition Positive Wire Location: Ignition Switch Harness
Accessory Positive Wire (+): Blue/Red
Accessory Positive Wire Location: Ignition Switch Harness
Parking Light Negative Wire (-): Red/Black
Parking Light Negative Wire Location: At Steering Column Harness
Parking Light Positive Wire (+): Green
Parking Light Positive Wire Location: In Drivers Kick Panel
Power Door Lock Negative Wire (-): Blue/White
Power Door Lock Negative Wire Location: At Door Control Relay. The door control relay, is located behind the driver dash speaker.
Power Door Unlock Negative Wire (-): Blue/Yellow
Power Door Unlock Negative Wire Location: At Door Control Relay. The door control relay, is located behind the driver dash speaker.
Door Trigger Negative Wire (-): Black/White Or Black
Door Trigger Negative Wire Location: At 2-Pin Plug, Top Of Fusebox
Domelight Supervision Wire: Use Door Trigger, Requires Relay
Domelight Supervision Wire Location: N/A
Horn Negative Wire (-): Green/Red
Horn Negative Wire Location: At Steering Column Harness
Tachometer Wire Negative Wire (-): Black
Tachometer Wire Negative Wire Location: At Diagnostic Connector. The diagnostic connector, is located on the passenger inner fender near the fuse/relay box.
Brake Light Positive Wire (+): Green/White
Brake Light Positive Wire Location: At Switch Above Brake Pedal
Factory Alarm Disarm Wire (-): N/A
Factory Alarm Disarm Wire Location: N/A
Factory Anti-Theft System: N/A
Factory Anti-Theft System Location: N/A

Don't bother with a schematic...they all differ. Use a simple test light and just probe the rear light harness with everything turned off except for the brake lights, only one wire should show power. You can also check the color of the wire coming directly out of the bulb socket. I own a jeep, can read and draw wiring diagrams and have yet to find a diagram that has the same color coding as my vehicle.