Thanks, found it and that was the problem. I t should be better protected from jumpers. It was hard to find a new one, dealer had to order. Dealer first told me it was the 3 way coolant valve so replaced that. Wasted $260.
My 2015 Ram ecodiesel cooling fan has stopped working. I can't locate the fuse or the relay in the fuse block by the battery where the book says they should be located. The fan spins freely, only 55,000 miles. Any ideas?