I'm wondering two things about the 12v electrical systems
I've been planning to have my trailer 12v system isolated from the TVs 12v and the trailers running lights however I've heard about a few people who have setup the systems in such a way as to be able to turn on the side marker lights of the trailer from a switch and run them from the trailer's battery when the TV isn't even connected. What's the secret to this magic?
Also do I need to tie the trailer's battery / 12V system into the trailer frame? I see the trailer lighting is connected that way and I've seen a few 12v wiring diagrams on the forum showing that people have tied the trailer's battery system into the frame. Can anyone provide clarity on this?
Thanks,
Matt