Chuck and Di wrote:
If I read this correctly the truck batteries are 11.38 and camper batteries are 12.56. This means the camper has nothing to do with it. Problem is contained to the truck.
Thank you!
That was lost on the last 15 shade tree diagnoses responses.
OP, disconnect trailer plug , although it must be a Ford with a disconnect or I’d expect the camper battery to have suffered as well.
Jump start truck, see if alternator is working. If yes, you drainded the batteries...somehow. If not, you probably lost the alternator.
That’s where I’d start.
Edit presume you have a diesel since you said truck batteries plural. It may take a little charging to light off the diesel. If you don’t have a booster or good charger, and don’t want to spend the time/try/risk charging with the jump vehicle, if you can hook up your good camper battery to the primary side of the truck, it should start it. (So you can diagnose the alternator)
