Golf&GM

iTrader: (20)

I recently received a 2002 Chevy Tahoe with a completely stock sound system from the inlaws with a dead radio. I pulled the radio and tested the wires with a multimeter. I tested the keyed power (yellow) and I get a solid 12v, but the constant power wire (orange) is only getting ~.2v. I tried jumping the keyed power to the constant and the radio fired up and worked great.

Everything else electrical works great inside the car except for the radio. I can pull a constant power from something else but I really don't want to hack the virgin harness. I'm having a hard time tracing the constant power wire to find the problem. Does anyone know where the orange wire gets it's power? Alt, fuse box, amp, directly from battery?

Atomic

iTrader: (42)

It should be fused in the driver side fuse box in the dash.

Golf&GM

iTrader: (20)

Ah, that 10 amp fuse? I remember the fuse checked out as far as continuity, but I didn't check to see if the fuse was actually getting power. I'll check it tonight to see if it has constant power.

Golf&GM

iTrader: (20)

I checked that fuse and it gets switched power but not constant. It looks like the underhood radio and radio amp fuses are getting constant 12 volts. I'm kinda at a loss for why the radio isn't getting constant power.