Tip: Tape a trailer height reminder near dash Mc D's, service area s in general. A lot of places restrict you, you need to know Mark, tape, highlight your brake activation plug s Some are not...
Tip: Use that camera in your smartphone. Much easier than writing info down and then trying to read your own terrible writing later. I take pictures before, during and after any dismantling or construction project. It's a great way to record model and serial numbers, etc.