Probably your battery was dead. You charged it when you drove. Is the battery old? If my battery dies I hook it up to my truck and use the truck for power.
nkdf:
Everyone so far as said battery.. a quick way to test is to plug in your 7way connector to the truck after it dies and see if it runs again.. if it does – it’s the battery. Otherwise it might be a thermal cutoff, could be due to hardening grease or your wiring / connection is failing. It cools off after a while and resets itself.
Battery was dead. Or it’s dying and you got a few more uses.
Maybe a dead battery….?
As others have said, sounds like battery.
When I use mine, I disconnect the battery on my trailer and keep the trailer plugged in to my tow vehicle with the engine running to avoid draining the trailer battery.
When you’re connected to the truck the connector not only connects lights but there is 12v line that probably charged you back up
Doesn’t look like it was suggested yet, so try this: new battery for the trailer.


