[kcsa75]

Thanks for the replies.

Originally Posted by SS Tim

My thought, if it is pink, is the idle stop solenoid found on some trucks. Best thing to do is trace it and match it up to the wiring diagram in the 72 factory service manual. It can be downloaded here.
http://67-72chevytrucks.com/vboard/s...d.php?t=558016

Thanks. I have the service manual. For some reason, wiring is all greek to me, but I may have to do that. The wire is red not pink and it's a heavier gauge wire than most of the others under the hood.

Originally Posted by Steve Cole

That looks like the HEI wire to me.
Posted via Mobile Device

Nope. HEI is working fine.

Originally Posted by RichardJ

Is the AC working properly? What year truck?

AC works fine on my 72 Chevy.


As for the idle stop solenoid, the carb doesn't have one and this wire "appears" to be factory and is routed to the passenger side of the truck. Wouldn't the solenoid be on the throttle linkage on the driver side?