Where to get tow wiring

[Bdc101]

I went back and looked at my hitch pictures. It has 71606760080 part number on it and says westfalia and BMW. Thst is the OEM hitch from what Google tells me. The wiring connector however is from Hidden Hitch.

I can try to trace the wires from the hidden hitch seven-pin connector tonight, but I know they don't go to the factory spot in the trunk, nor do I have the factory module. I also get the aforementioned brake light warning when I hook up my trailer. Additionally, the brake lights work fine but the running lights are very dim.

I figure I can fix both of those problems with the OEM module and seven pin connector harness from BMW, but only the module is available. Do any of you know where you can find the harness anymore?

Alternatively, any other suggestions are appreciated. My plan if i can't get the OEM equipment is to just wire in the Tekonsha and deal with the brake light warning. Thanks for your help.

Ben