I use a vehicle non specific (works with any TV that has a 7-pin with 12VDC charging circuit on center pin. It is an Curt Echo, uses your smart phone to setup and control brakes manually, if desired. No need to modify vehicle wiring, it connects into the 7-pin and the trailer plugs into it. cheers
@1bentbike If the X5 is pre-wired for a brake controller, then you have a fairly wide variety of choices depending on budget and installation goals. I use the Redarc Tow-Pro Elite and love it. https://redarcelectronics.com/products/tow-pro-elite-electric-brake-controller Perhaps the most mentioned brake controller in this…