After purchasing a trailer (wags pet) and installing Bushtec hitch, 5 pin wiring harness with plug and J & M interconnect harness the bike and trailer lights functioned erratically. After 3 hours diagnosis I found I had no ground to any of the rear bike and trailer lights. I decided to forgo an isolator and instead wired in-line fuses (less ground) to the trailer harness. I found that J & M harness wired it's ground into pin #4 on the Deutsch connector, which is non existant in the HD rear connectors, 7a and 7b. I checked the manual and ground is indeed pin #5 on 7a and 7b. I also checked an enlarged pic of J & M's harness and as mine, ground is wired to pin #4.
Has anyone else encountered this problem with the J & M harness?
After switching the #4 and 5 wires in the J & M deutsch connector, the lights on both the bike and the trailer now all funtion properly but...
with the ignition on and engine off, I can now slightly hear my turn indicators and a hum over my speakers (Hawg wired system), even with the radio off. The hum is only evedent when the brake/running/signal conversion module is installed (aft of the J & M harness). I am not sure if the sound was there before the trailer install. Enclosed pic of the J & M, notice the w wire spliced with the b/r wire in pin #4, Thanks, Roger