Installed new aftermarket radio. The old one was causing a short in the speakers, which only let the right side dash speaker work. No I have ZERO power to the radio. Fuse is good, and in line fuse on yellow wire is good too. Doesn't come on with ignition or ACC.

 

What are the power requirements of this radio and how do you have it wired to the truck? IOW is there “always on” power, a key on trigger, etc? Measure each of those voltages at the radio connector using the harness ground as the ground for the meter black lead.

Try disconnecting the speakers at the head unit and see if it powers on. The short may be in the speaker wire.


George