[copperhead47]

i thought about trailer connectors too- but with a 7 pin connector- most likely you would have an unused port left over- good idea though- try looking up "mil-spec" or military specification, or round plugs- the kind i had had 12 contacts for 12-14 guage wire and the other kind- roughly the same diameter had 32 contacts for sensor and data wire- or you could do hwat everyone else here is doin by using mini andersons and D-sub connectors- which isnt a bad idea- theyre all very lightweight and the mini andersons are very customizable. as far as i know i dont know anyone who is using trailer hardware. youre on the right track though