I have a 1994 gmc jimmy. My stock radio is a delco with a tape player. I can set the clock and it keeps time but will not power on. I Also tried a delco Bose stereo and the same thing happens.
I have power to the orange wire constant and
power to the yellow key on. And good ground.
What else can I try?
1994 GMC Jimmy 4 Dr SLE 4WD SUV