Charge Circuit of 2020 Newmar Bay Star for Flat Towed Vehicle

Published 05/18/2022

Question:

2020 Newmar Bay Star class A motor Home with the 2019 Ford F-53 Chassis. I switched over my tow car to a 2021 Ford Escape Hybrid. Dealer installed everything I needed on the tow car including RM-156-25. I need to complete the install for the motor home using RM-156-75 The seven pin connector at the rear has not been completed for the #4 pin but Newmar has folded back a wire at the connector which is routed back to and under the dash to the left of the drivers side right next to the fuse panel. An orange wire. Can I just use this wire at the dash and simply connect to a the fuse panel at a unused terminal that is fused and hot when the ignition is on rather then run a whole new wire to the battery compartment. Do I still need the circuit breaker to prevent a backflow of 12v from the tow car when the motor home ignition is off

asked by: Patrick J

Expert Reply:

Assuming that wire you found is a 12 volt circuit that is fuse protected like you mentioned you certainly could use it to charge the tow vehicle with the # RM-156-75. You should note that the charge circuit of a 7-way is actually the 1:00 pin of the connector as you are facing it.

expert reply by: Jameson C