AC Delco radio wiring - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RedBed · 01-07-2018, 11:23 PM

Switching out the AC Delco for a single DIN unit. I guess this is the POWER plug for the old radio. I assume Yellow is HOT, black is GROUND, but what is the grey?

ray_mcavoy · 01-07-2018, 11:34 PM

Yes, the yellow wire is power (switched on/off via the ignition) and black is ground. The grey wire is for the dial light. It's connected to the instrument panel light circuit so it brightens/dims as you rotate the headlight switch knob.

RedBed · 01-08-2018, 01:06 AM

OK, so it won't be needed with the new stereo.

Thanks.

01-07-2018, 11:23 PM	#1
RedBed Registered User Join Date: Apr 2017 Location: TX Posts: 254	AC Delco radio wiring Switching out the AC Delco for a single DIN unit. I guess this is the POWER plug for the old radio. I assume Yellow is HOT, black is GROUND, but what is the grey? __________________ *1979 Chevrolet Bonanza/305/4L60/Edelbrock Performer/Holley 600 Classic*

01-07-2018, 11:34 PM	#2
ray_mcavoy Registered User Join Date: Nov 2009 Location: Sherman, ME Posts: 2,355	Re: AC Delco radio wiring Yes, the yellow wire is power (switched on/off via the ignition) and black is ground. The grey wire is for the dial light. It's connected to the instrument panel light circuit so it brightens/dims as you rotate the headlight switch knob.

01-08-2018, 01:06 AM	#3
RedBed Registered User Join Date: Apr 2017 Location: TX Posts: 254	Re: AC Delco radio wiring OK, so it won't be needed with the new stereo. Thanks. __________________ *1979 Chevrolet Bonanza/305/4L60/Edelbrock Performer/Holley 600 Classic*



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.