I know I've seen this in here before but cant't find it. I'm having trouble trying to wire an aftermarket radio/cd to the Infinity amp. Tried one used and one new. They look like they are working but no sound. Any suggestions? Thanks in advance. Know someone on here knows the answer.

 

If you are wiring to an aftermarket head unit you must connect the REMOTE wire (normally blue or blue white)to the white wire with silver/black dots on the factory harness