I bought an old, 1991 Jayco 1006 popup trailer the other night, drove it home 70 miles in the dark. All the lights worked miraculously. It has a metal round 6 way trailer lights plug. I used an adapter to the large plug on my Sierra. As i started driving home, I would get a DING DING DING "trailer attached", "check trailer wiring" all the way home, every 30 seconds or so.
Very annoying. It didnt tell me I had a trailer attached or to check the wiring for the last 20 miles or so. The wierd thing is, the trailer lights didnt flicker like there was a bad connection or anything. The trailer does have a place for an onboard car battery. No battery there.
I am trying to decide if I need to convert the trailer to the large round plug to prevent the DINGs all the way to the campsite.
Any ideas? I have towed my small 5x8 utility, a large 8x12 utility and a horse trailer with no issues or messages.