Starter wire Help!

[Cesar Diaz]

Hi

I have a 1972 C10 with a 402 BBC

My ignition was having issues where sometimes I'd turn the key and the engine would not crank. The radio lights would come on but no Crank. I suspected a failing Starter Solenoid so I ordered a new one. When I went to remove the starter to change the solenoid, the wire running to it from the ignition was frayed and came of in my hand due to a poor butt joint connection. I suspect that was the issue. I removed starter tested both the solenoid and the starter and everything works as it is supposed to so problem solved most likely.

When splicing in a new wire near the firewall the wire loom that comes from the ignition switch has 2 additional wires that are capped off a red one and a yellow one. can anyone tell me what those are for.

tranny was switched from TH350 to Muncie sm465 4 on floor.

Also distributor was switched to HEI. I have no clue what they are for.

[pjmoreland]

I'm not sure about the red one, but the yellow one would have gone to the outer post of the solenoid to provide 12V directly to the original coil during cranking. This connection is no longer needed with HEI, as HEI should be wired with its own 12V power wire that takes the place of the original cloth-covered resistive wire that would have powered the original coil with the engine running.