Wiring ideas for you
Hey Rocknroll
I have run two sets of wires for my LED lighting system and also for the LEDS in my tourpack trunk, I started at the underseat tail light connector, ran the wires in a long piece of black shrink tubing under the frame member to the rear of the electrics, then followed the fender braces back to the tail light area. I used black cable ties to hold the new wiring harness tight to the inside of the rails, and connected to the saddle bag support frames, in your case, just follow the saddle bag back leg down to the cross brace, the one going to both sides behind your rear wheel. So black cable ties and black shrink tubing hides it fairly well, you can't see my wiring unless I remove the left saddlebag. I also have connectors under my trunk for maintenance, as if you ever have to remove your fender or anything on the rear, you can just unhook the connectors.
Enjoy !
Oh I soldered and shrink tubed all the new connections on the tail light connection end, not the source connector.