The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 66 C10 Engine Wire Harness w/ Gauges and HEI

Shtudwn · 01-13-2018, 07:46 PM

Hi Ray,

I think have everything correct as I used your description and page, as well as the Engine Harness I returned.

That being said, the harness I returned had a yellow wire from the 'R' Terminal on the starter up to the HEI. At the HEI connector it was doubled with a pink wire. this wire ran back to the bulkhead. I recreated that exactly and now I can only get 10.2 volts to the HEI when I crank the engine.

Any ideas why I am not getting 12 volts? Don't I need 12v?

Thank you.

01-13-2018, 07:46 PM	#9
Shtudwn Registered User Join Date: May 2015 Location: Richland, WA Posts: 128	Re: 66 C10 Engine Wire Harness w/ Gauges and HEI Hi Ray, I think have everything correct as I used your description and page, as well as the Engine Harness I returned. That being said, the harness I returned had a yellow wire from the 'R' Terminal on the starter up to the HEI. At the HEI connector it was doubled with a pink wire. this wire ran back to the bulkhead. I recreated that exactly and now I can only get 10.2 volts to the HEI when I crank the engine. Any ideas why I am not getting 12 volts? Don't I need 12v? Thank you.