Hi Neale,
I hope your treating my rear end well.....
I ran the power wire in to the door by drilling a hole behind the wheel holder and put a rubber grommet to protect it. Then I fed the wire into the car by pushing through the rubber tube the car wires go through. I put a laminating switch on the dash so I could see if it was on or not. I did not worry about using relays to switch because I was using low current LED inserts, just fused it to protect the wiring.

