On my 1100 there was a connection under the seat for rear lighting. I tapped into the wires just past the connection when I did my rear additional light. I choose that spot are it's well protected from weather. I did not cut the original wires. Trimmed some insulation off, twisted new wire on, soldered and shrink wrap. That was about 3 years ago, no issues or concerns. Not the best video but hopefully you get the idea.