Cherokee infinity amp
Senior Member
Joined: Feb 2012
Posts: 884
Likes: 46
From: Baltimore
Year: 2002
Model: Grand Cherokee
Engine: 4.0L (AMC) Straight Six
Did you connect the amplifier turn-on wire when you hooked up the aftermarket radio? I think it's blue, and it's on both the aftermarket-to-factory harness adapter, and the harness that came with your new radio. This sends a "turn-on" signal to the stock amp that then sends a signal to the speakers every time you turn on the radio. This is a common mistake for people that don't know they have the Infinity system or simply don't know they had to connect that wire.
If you DID connect the aforementioned wire, did you get sound with the stock radio?
If you DID connect the aforementioned wire, did you get sound with the stock radio?


