Do a walk around at every stop!

Went to Talladega for the race and on the return trip my buddy was traveling in front with his newer TT when I had lost site of him in traffic north of Louisville. Suddenly in all the heavy northbound traffic I seen them on the side of the road. Not being able to get pulled over until some time down the road I find out he had lost his trailer lights. So off I go to the next exit, turn and head back south to the next exit and then back north to where they were stopped, keep in mind I'm towing a 5th wheel, we find that his trailer wiring had drug the road to the point it had wore into. After getting to the next exit and wiring the two ends back together he had lights and off we go with a 2 hr delay. Every time I stop for fuel, to eat or for potty break I do a walk around to check and see if things look to be in order with nothing dripping or hanging and everything still connected...I think from now on he will be doing the same thing.