So I'm trying to install an aftermarket cd player into my 2001 Ram 1500. I connected all the wires and plugged in the wiring harness and went to turn on the radio. But it didn't work. I double checked my wires and all were fine so I took a test light to the wires and found that both the positive and the negative speaker wires are getting power. WTF?
A friend said that it was because of the stock amp installed so I need to know what to do to make the cd player work. Any and all help is awesome.