Grab a DMM and check the harness where it plugs into the back of the HU. You should have 12v across the yellow and black wires (+ lead on yellow, - lead on black). When you turn your key on, you should also get 12v across the red and black wires. If you don't get this voltage, try using a part of the chassis for your ground. If you then get voltage, something is bad in your ground connection. If you still don't, the problem is in your red/yellow wire connections.
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Ohio Bass Society
Team XS Power
2010 120-129.9 Bassrace World Champion