I'm trying to put in a new head unit on a 2007 Chevy Silverado 1500 Classic, and for some reason, I'm only getting about 4.5v when car is started. The fuse seems fine, not sure where to look next.
Anybody have something like this before?
No, the Constant is 12v. the accessory is low, so low that it doesn't actually trigger the head unit.
If I bridge the constant to the accessory, everything works. Just the Accessory isn't working correctly.
I thought I had got a reading of 4 volts, but now every time I try I'm only getting like 0.5v.
I did yeah. The OEM Harness was frustrating because the pinouts for the aftermarkets had the wrong layout. I have it correct. I'm measuring low voltage out of the acc wire probing at the OEM harness. Same issue with the OEM radio.