I need a wiring diagram from ignition to starter to coils

hi Eric.
this link should help you out.
wiring schematics wiring diagram for 2005 chevy cobalt ignition coil pack...
if not try this one might help you find out.

wiring schematics wiring diagram for 2005 chevy cobalt ignition coil pack...

The ignition switch does not go to the starter solenoid . Pin 87 at the starter relay sends B+ voltage to the starter relay . Do you know what a starter relay is an how it works ? The ignition switch is an input to the PCM - engine computer . When the PCM sees this B+ voltage from the switch it energizes the starter relay sending B+ voltage to the starter solenoid . http://www.bbbind.com/free_tsb.html free wiring diagrams !

Dead simple. Old system used a resistor wire between ign. switch and coil. HEI does not need this so you need to run a 10 or 12 guage wire from the ignition switch "ON" position to the new coil with no resistor in between. This also means you no longer need the extra wire from the starter to the coil which was used to bypass the resistor wire in the old system to provide full 12 volts for starting car. The reason for the resistor wire in the circuit was to reduce the voltage to the coil once running so the amps in the spark would be higher to burn more thoughly and increase fuel mileage.

batter positive to one big terminal of the starter solenoid--large wire as in a car ( the other big terminal will have a wire from it going into the starter)
a wire from the start point of the ignition switch to the small terminal of the start solenoid .( This to energize the starter solenoid to start the engine.) a large wire ( 30 amp capacity ) from the positive terminal of the battery going to the BAT terminal of the alternator the plug in the back of the alternator will go to the battery light or ammeter.. wires from the start and run positions of the ignition switch to the coil. One to provide power when the starter is engaged and the other from the run position to provide power to keep the engine running
basic but it will work

Let's see if I can explain it. Pretty simple start circuit, but starting issues are very common to Hondas and Toyotas of the '80's and early'90's. Lots of guys used to rewire their start circuits with new wiring and relays from ignition switch to the starter solenoid just to stop those no starts.
From the ignition switch is the black/white start wire, it is hot only in start, goes direct to the "starter cut relay"- a 4 pole starter relay, the black/ white wire (black with a white stripe) is both the power feed and the coil power to the relay. Before the wire enters the relay it is spliced. one wire goes to power feed at relay, other wire goes to coil side of relay. Here's where the clutch switch comes in: the clutch switch acts as the ground for the relay's coil side. Okay, you turn key to start, power goes to the relay on both the power side and the coil side. When clutch is depressed, it grounds the coil side of relay, this energizes the relay, so power goes out of relay on the power side, as a black/red wire...and goes direct to the starter solenoid. Somewhere before it reaches the solenoid, it turns back into a black/white wire. But nothing else is in a wiring diagram for your start circuit. Buy a can of CRC electronic cleaner. Spray all connectors in the start circuit. Pull off the solenoid wire at starter-that connector. Also the starter relay , pull it out and clean the relay terminals where it plugs in. Get all clean connections in the circuit. If no help, swap in a different relay. If still no help, get a voltmeter (or a test light), when the starter doesn't want to work, check for power at the starter solenoid with key held in start, and clutch depressed. If power there, the solenoid is the problem. If no power, work back to the relay. Pull relay out. With key held in start, two terminals for the relay should have power-the coil plus side, and the power feed from the ignition switch. If both have power, may be the clutch switch not grounding the relays coil side. If no power to relay, check the start wire out of the ignition switch.
Need a wiring diagram? This site is awesome-free wir. diagrams and TSB's for every make and model:

Starters don't send signals

The Solenoid on it gets battery voltage to
it's coil & then pulls in the contacts to power
the starter motor.

Your asking about the solenoid control circuit
Need a wiring diagram to start any testing of that
circuit

If that isn't the problem, then check for fuel pressure,
spark or injector pulse & the ignition switch & such

Need wiring diagrams at some point to understand
what you working on

there should be a slot for each wire on back of ignition play with them till you get it right cant hurt anything

Why not eBay? you may be able to find a "lightly" used harness from an appropriate dodge or Chrysler product that uses your engines?
Try for a Repair manual or electrical repair segment for an appropriate Chrysler product with your engine.
http://www.manualslib.com/

Check with npd.com (nationl parts depot) They have what you need.
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if you have a 4.3 liter the wire from the positive post on the battery should go to starter and to the post with 10mm nut on the back of the alternator with a 2nd wire that goes to your ignition coil. ignition coil wire should have a fusible link in the line.