The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Alternator warm with ignition off 1967 C10

mr.precision · 07-19-2018, 07:14 PM

The brown wire coming off the bottom of the 4 prong connector on the regulator goes to the condenser front, then out the other side back into the wire harness. You can see this in the picture.
I don't follow what you are saying. The regulator is grounded, as you say, to the chassis via a black wire off the regulator body. The diagram does not show the condenser. I checked the 1967 diagram (T-5283 is 1968) but it is identical. Perhaps this isn't original to the truck, however the wiring looks original.
With everything hooked up, as it was, and a new regulator, charge voltage measured across the battery is correct at 14.8-15.0 volts. But the new regulator chatters when at idle, so obviously something isn't quite right.
Thanks for the help.

07-19-2018, 07:14 PM	#11
mr.precision Registered User Join Date: Feb 2018 Location: Fountain Hills, AZ Posts: 161	Re: Alternator warm with ignition off 1967 C10 The brown wire coming off the bottom of the 4 prong connector on the regulator goes to the condenser front, then out the other side back into the wire harness. You can see this in the picture. I don't follow what you are saying. The regulator is grounded, as you say, to the chassis via a black wire off the regulator body. The diagram does not show the condenser. I checked the 1967 diagram (T-5283 is 1968) but it is identical. Perhaps this isn't original to the truck, however the wiring looks original. With everything hooked up, as it was, and a new regulator, charge voltage measured across the battery is correct at 14.8-15.0 volts. But the new regulator chatters when at idle, so obviously something isn't quite right. Thanks for the help.