Originally Posted by snkrichards
Some previous owner replaced the thermostat but left the old one in place. I don't know if the wires to it have any voltage or not. I checked em and there doesn't seem to be any voltage.
I'm not following exactly what you want to do. To test the power to the wires, just test with a jumper light or a multi-meter. Sometimes a picture of what I'm trying to do, makes it easier for forum members to comment.
I hate loose wires hidden on my trailer by previous owners. I come along and reinstall a fuse or turn on a switch and things start messing up. The worst thing I fear is heating up a wire and starting a fire. I don't mind working behind a previous owner, I just want to be able to figure out what they did.
When I got my trailer, I found the previous owner didn't like the break away switch idea but he wanted to appear legal, so he removed a wall panel, disconnected the breakaway switch wires and put two wire nuts over the ends of the dead wires. I finally figured out what he did, but it took me awhile.
Ideally he would have at least left me a post-it note telling me what he did with a red arrow pointing at the panel area.