Are you kidding me?
Is that all you got? LOL
Checking the wire at either end is not a problem ... I have extra length wire and gator clips laying around. If one wire end was at my mail box and the other on the car I could trouble shoot it.
All you just mentioned is a walk in the park for me.:D
I have never had to "maintenance" anything on the car in ten years. I've added wires... never had to trouble shoot.
Looking stock works for me than having a added eye sore.