I have a 2002 Road King, that I installed Docking hardware, and swap between naked, a pillion/sissy bar, and a Tour Pak.

The tour pak didn't come with lights, and when its installed on the cycle, the brake light is semi-hidden under it...so I'd like to put a brake light on the back of the tour pak for better visibility to cages. Not as concerned about adding turn signals, but that's an option also.

Before I go cutting and splicing wires, does someone make a pigtail harness that taps into the existing harness by just unplugging a connector and tapping into the wiring I need without a lot of headaches?

 

Don't think this is the answer that you want but I just used one of those wiretaps that just pinch onto the brake light wire. No cutting at all, and you can use some blade type connectors to make the box detachable. Then just do your ground to the frame.....

 

Yes, just splice into your rear light brake circuit after front / rear switches.