7-pin RV receptacle has one bad pin

Just rewired a 7-pin receptacle that mounts under the rear hitch of my 09 HR Neptune. The old one was cracked. This is for the towing package. The lights and signals on the coach all work. One pin is not getting voltage, the right blinker. Right blinker on coach works. I have followed the wire to another wire harness, no voltage. I understand there may be a fuse for the accessory towing, just for that blinker on the right side. Again the coach’s blinker work, not the wire to the receptacle. I’ve found the fuse box, visually they look good? But there are so many labels, fuses, diodes and relays. What label for a turn signal am I looking for? Is the left and right signal a separate fuse or relay. Maybe I’m looking for a different fuse box. Found two, one large and one smaller, fuse boxes up front in the left side cargo area. Maybe wrong fuse boxes? Any help to troubleshoot where I’m losing the voltage to the one plug’s pin would be appreciated. Needless to say, the right blinker on the toad isn’t getting its voltage either. Thanks y’all


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