Troubleshooting Slide In Truck Camper Battery Draining When Being Towed By 2019 Ram 2500

Question:

Hi, We have this wiring on our 2019 Ram 2500. With our truck running, there are 12 + volts at all pins at the 7-way in the bumper while the functions are turned onblinkers, taillamp, etc. At the in bed 7-way connector there are 14+ volts while the truck is on and no lights/functions are on or being used at all. Is that normal? The reason we are checking our wiring is that our truck camper battery discharges while it is hooked to our Ram. On an hour trip, our battery will go from 12+ volts to 9-10 volts. Thanks in advance!!

asked by: Brenda M

Expert Reply:

That is a strange issue to be having. I would start out by checking your truck camper to determine if the battery discharge is being pulled by the camper or is the truck pulling the charge from the camper. If the camper battery is being drained by the camper then you will just need a Charge Line Kit # RM-156-25 to run from the 7-way in your bed to the camper battery. This should allow the battery to charge off your 2019 Ram 2500 when it is running.

In the event battery power is somehow being drawn away from the camper battery and going to your truck you will need a Diode # RM-690 in your charge line to prevent power from going back to your Ram.

expert reply by: Bud M