I posted this elsewhere, but here are a few more things:
- Check the connectors on the battery for the break-away switch. I had to move the battery and holder a few inches and while doing this, I noticed the little spade lugs connectors were barely making connection to the battery. ALSO, the wires that were supposed to be crimped in the spade lugs were far from that. The wire literally fell out of the spade lugs when I touched them.
- While everyone is checking the tire pressure in the trailers, check the pressure in the tow vehicle as well. Over the past 35 years, every time I take any of our trucks in for oil, tire rotation, or whatever service, they always fill the tires (or deflate them) to 32lbs. Every truck we have ever owned clearly says the tire pressure when cold should be 35lbs.
- Also, check those lugs nuts on the trailer tires every now and then... Can be to sure.
I am in the process of purchasing TPMS for the trailer as that will provide a much greater comfort level when towing.