I have had this problem from day one.
I tried squeezing the RCA jack, taping the connection, still have to reach under and tap the wires bundle.
I am going to try adding a patch cord between the 2 wires and see if I can identify which end is more of the culprit, or eventually cut the RCA jacks and splice the individual wires. I am reluctant to try this because the wire lead from the radio unit is pretty short and it is difficult to reach all the way up to the back of the radio.
__________________
|