Wire harness help
 

Hello everyone I am new to the sight and so far had been great. I am have trouble identifying a couple wires on my 72 C10 motor harness. The first one is a thick pink wire with female spade connector. The second is a black wire with a round boot.

Re: Wire harness help
 

Here is a photo of pink wire

Re: Wire harness help
 

I think the 1st is the blower motor.
I'm lost on the 2nd. You might try the electrical section where there are great color wiring diagram links. I actually took one to Kinkos and argued to get it printed and laminated for $11 on poster size paper. I rarely look at it, but its great.
That wire looks like it may have once been orange. The color fades.

Re: Wire harness help
 

I bet you are right on the blower motor. I have not hook power to it yet. I read somewhere else that the pink wire ran to the throttle stop on the carb when it had AC but could no verify.

Re: Wire harness help
 

I have an orange wire with a boot hooked to blower motor. Black wire boot is too big

Re: Wire harness help
 

Edit your signature to show us what your workin with like mine down below, is that a factory harness?

Re: Wire harness help
 

I'm not sure what your working on but here's the pink wire on my truck, Attachment 1397778

Re: Wire harness help
 

Is that hooked to the throttle sensor on the carb?

Re: Wire harness help
 

The pink wire runs to the idle control solenoid, which was part of the TCS system (transmission controlled spark) if I remember correctly. It does not have anything to do with A/C because my truck had it and there was no A/C on my truck, but that solenoid was there along with a relay mounted on the firewall, which was also part of the TCS. Don't know about the black wire with the boot.

Re: Wire harness help
 

It's an idle control solinoid but it doesent do anything, prolly cause I have removed my trans controlled spark. What was left of it anyway. I honestly had no idea it was part of the tcs. Glad I spoke up on here, now maybe I'll take that junk off and just add an idle adjuster screw. Hurray for wire removal! I like it clean under the hood. I don't think I have the black wire but I know orange is right for blower motor. Maybe it's for ac which I don't have, there is a wiring diagram sticky in the electrical FAQ.

Re: Wire harness help
 

Maybe it is this, also part of the TCS. I cut the wire off mine and now it's just a cap.Attachment 1397914

Re: Wire harness help
 

Re: Wire harness help
 

Looks like it hooked to the tranny. I had mine rebuilt and they must have taken it off. That would explain why I. Can't find the hook up.

Re: Wire harness help
 

You should have an idle screw already. The solenoid only worked with the TCS system. You can remove it and it will not affect anything.