Electrical problem - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dale Kite · 12-31-2004, 09:35 AM

I have a 87 GMC with a strange problem, when you shut the door the radio loses the station. The interior roof light burns dim at night though it isn't on. The horn wont blow. The truck starts fine and the headlights work at night.Any thoughts where to start looking? Thanks.

Dale Kite · 01-02-2005, 02:24 PM

Thanks for the help.

cochino12 · 01-02-2005, 02:28 PM

Sounds like your +12v for the radio is somehow wired to the pinswitch, maybe they tried wiring it like new cars where the radio keeps power without the key til the door opens. If its an aftermarket radio switch the yellow wire to 12v+. Or you might just have a bad pinswitch, you can pick one up at a parts store for a couple bucks

12-31-2004, 09:35 AM	#1
Dale Kite Registered User Join Date: May 2004 Location: Tennessee Posts: 10	Electrical problem I have a 87 GMC with a strange problem, when you shut the door the radio loses the station. The interior roof light burns dim at night though it isn't on. The horn wont blow. The truck starts fine and the headlights work at night.Any thoughts where to start looking? Thanks.

01-02-2005, 02:28 PM	#3
cochino12 It followed me home? Join Date: Mar 2003 Location: Yup Posts: 5,751	Sounds like your +12v for the radio is somehow wired to the pinswitch, maybe they tried wiring it like new cars where the radio keeps power without the key til the door opens. If its an aftermarket radio switch the yellow wire to 12v+. Or you might just have a bad pinswitch, you can pick one up at a parts store for a couple bucks __________________ Adam That's why they call it a shortcut Kyle, if it was easy it would just be the way. 86 c-10 SWB 85 CCSB 90 GMC K30 Crew SRW 1985 C30 Dually

01-02-2005, 02:24 PM	#2
Dale Kite Registered User Join Date: May 2004 Location: Tennessee Posts: 10	Thanks for the help.



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