1973 Z28 engine stop solenoid wiring

[z06ufgrad2002]

I'm trying to diagnose why my engine stop solenoid isn't getting 12V power when the engine is running. My car does not have the TCS relay and I've jumped the solenoid with 12V and it works. I've traced the tan wire to the back of engine but it goes into another wire loom that I can't access easily. Where does the power for this circuit originate and are there any other common failure spots to check and/or relays in this circuit?

Thanks

 

[Jim Streib]

Using the wiring diagrams on this site it looks like the solenoid gets power from a fuse in the fuse block.

Jim

 

[z06ufgrad2002]

Thanks I'll check the fuse block for burnt fuses!

 

[Jim Streib]

Thanks I'll check the fuse block for burnt fuses!

Check them with a meter to make sure they are passing power from one fuse clip to the other. Sometimes the glass fuses do not make good connection to the fuse block clips, the fuse possibly burns open under an end cap, or there may be some other issues that a visual check will not expose.

Also check the firewall bulkhead connector.

Jim

 

[z06ufgrad2002]

Check them with a meter to make sure they are passing power from one fuse clip to the other. Sometimes the glass fuses do not make good connection to the fuse block clips, the fuse possibly burns open under an end cap, or there may be some other issues that a visual check will not expose.

Also check the firewall bulkhead connector.

Jim

Can you post a pic of the firewall bulkhead connector?

 

[z06ufgrad2002]

Can you post a pic of the firewall bulkhead connector?

Thanks for the pic. I was planning to clean all those connections as well. Added to me "to do" list!