Had an issue with the Challenger before trading it in. The manner in which the six pin connector on the TOAD was wired caused an intermittent short which caused both fuses (left and right turn) to blow on the coach. It also blew the fuses on the new coach, the Accolade, the first time we hooked up. It was an intermittent issue and the RoadMaster rep came out to the house and rewired my setup and I haven't had any issue since.
The F53 owners manual will tell you which fuses and relays control the trailer towing (7 pin) connector. The fuses may be in the Power Distribution Center under the hood and not under the dash depending on how your unit is configured.
First thing to do is to take a multimeter and determine if you are getting power to all of the pins on the 7 pin. If not, the problem is a fuse or coach wiring. If you are the issue is with the wiring to or on the TOAD. You can use a 12VDC test light for this if you don't have a multi meter.
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Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
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