Re: switched hot wire for phone charger on a K5 1000?
When I used to install aftermarket electronics in cars, the install bay showed me a great way for splicing wires. You remove about 1/4 in of the rubber coating around the wire. It's best done with a razor blade. Be careful to only remove the jacket and not cut any of the individual wires. Put the razor blade in the center of the wire and rotate it a bit to open up the center of the wire. It should create an "eye" similar in shape to the eye of a needle. Take the wire you plan to add to the harness, run it through the whole, then pinch the hole closed over the wire, and rap the newly added wire to the closed up eye. If that makes sense. This way, you never actually sever the original wire, and it's much much stronger than twist the wires, twist caps, and IMO, soldering.