I have a 72 project car that I'm trying to start for the first time. When I first put the battery in and turned the key, I had no crank, no click, nothing.

I have a good ground and battery voltage at the starter. I checked the clutch safety switch with an ohm meter and found it to be working properly. The wires coming off of the clutch safety switch are purple and purple/white which is correct via my wiring schematic. I tried applying battery voltage directly to the purple wire (which goes to the s terminal on the starter solenoid) and the starter engaged and cranked the engine.

After further wire chasing and schematic studying, I found another connector with a purple and purple/white wire underneath the center console. This connector has nothing connected to it which I'm thinking may be my problem as after applying battery voltage to this purple wire the engine cranks as well.

From what I can gather the purple/white wire goes back to the ignition switch. I just do not know how or what should be connected to this open connector. I have tried to attach a link to a picture of the connector as well.

Does anyone have any ideas of what I am missing and/or what else I should check for? Any help is much appreciated.

Thanks!

http://s1292.beta.photobucket.com/us...4138e.jpg.html

 

Purple-white wire is the clutch switch on my 73.

 

Put a jumper between the two contacts for the plug in the picture. I believe the one in the pic is for an automatic neutral start switch and according to the wiring schematic would make the circuit complete with a jumper in place. Maybe someone with a 72 will chime in.

After looking at the schematic again, it looks like either switch will complete the circuit, auto( in the pic) or the clutch switch. Have you checked to see if you are getting power to the clutch or the connector in the pic when you turn the key to start? It may be that the ignition switch needs adjusted or is bad.

 

OK. Definitely appears that is for the neutral safety switch. I do not have power at the clutch safety switch. Before checking the ignition switch, I checked for power at the fuse box which there is none.

It looks like the main engine wiring harness has been spliced and cut at numerous places. I'm ordering a new one tonight. For the sake of checking though, I ran a jumper wire from the starter to the bulkhead connector. I still do not have power at the fuse panel on the inside of the car let alone at the ignition switch or clutch safety switch. Is it possible for the whole fuse panel to be bad?

 

You may have burnt contacts in the bulkhead connector. It has a bolt in the center on the engine side, you can unscrew it and pull the connector apart to check.

 

I actually did that. The contacts seemed ok. I put the jumper wire directly on the female end of the connector which I presume is the back of the fuse panel.

 

There should be a red 10 ga wire in the engine side of the connector, does it have power?
In post #7 of this thread http://forums.corvetteforum.com/c3-t...g-harness.html, there is a pic of the harness plug and in the upper left of the pic is the horn relay, do you have power to the terminal with the orange and black fusable links?

 

No there is no power at that connector at all. I jumped power from the battery to the red 10 gauge wire. I did this with the connector disconnected and the power going directly to the fuse panel on the engine bay side. With that done, there is still no power on the inside of the car at the fuse box. Could there be something internally wrong with the fuse panel?

 

Try hooking your jumper from battery power to the batt terminal in the fuse box and then check for power in the car.