I am retro-fitting a cruise control long range radar unit to my F26 X4, but the wiring harness behind the front fender is no longer available, so will have to make my own. Connectors are no problem, but I’m not sure what wire gauges are used. The secondhand radar unit came with a cut-off plug and the wires look to be 20 AWG. Does anyone know what wire size BMW uses for the CANBUS wiring in their main looms? Also for power, for low current devices like the radar?
Thanks in advance.