Todd M Caldwell
Active Member
Removing the Old Clarion Radio and replacing it with a New Polk UM1A. I hate doing electrical work (them wires have magic smoke in them), and of course the Plugs are different so I have to cut the old plug and splice in the new one. Sounds easy...... until I looked at the wiring diagram. Pin # 3 and 4, make no sense to me. #3 is marked "ILL-DIM (Running Lights) and #4 is marked Remote Trigger"..... ????