I feel your pain . I have ten trailers and only five are on road. My wife says I have a thing for trailers but I look at it like one truck can do a lot of things with trailers and no extra insurance and taxes.
You can solve the expensive car electronics failures by putting a in line fuse on the hot wires at trailer plug - takes three.
I will be doing this. Though honestly I was considering converting all the lights to wireless. Let the mice chew air.
