I had to have mine replaced on my 7390 after they replaced my roof with a PVC one and pinched the cable. They tied into the cable and ran it down the back, underneath to the center compartments and then up to under the dash. I think that I bought the 70 foot cable online from the back- up camera guy in the Fl.(?) somewhere.
'01 Tradewinds 7390 LTC
2011 Jeep Liberty