metra harness and mach 460

i'll try moving the RCAs to a different jack. why would this make a difference?

i dont think they have been working since i installed the HU. everything is soldered so i dont think there could be anything loose


because if you have the rca's in the wrong jacks, part of it will work and the other part won't. i remember doing this myself, just move up or down, depending on where you have them and each time you do turn the volume up to see if it makes a difference.

do you have 2 pairs of jacks or 3 pairs on the back of that head unit?
 
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