Turn signals blink quickly with trailer attached

[TowX]

Unfortunately that only works for trailers that either have no brakes or have surge brakes. Electric brakes require a 6- or 7-pin plug.

Here's the Valley part for the 7-round to 7-round adapter:
7-Way to 7-Way Trailer Adapter for VW, Audi and Porsche Towing Trailers with LED Lights Valley Wiring V39010

[JCL]

Originally Posted by TowX

Unfortunately that only works for trailers that either have no brakes or have surge brakes. Electric brakes require a 6- or 7-pin plug.

Here's the Valley part for the 7-round to 7-round adapter:
7-Way to 7-Way Trailer Adapter for VW, Audi and Porsche Towing Trailers with LED Lights Valley Wiring V39010

Good solution, and a good price.

It also suggests that the BMW tow wiring module uses the same Bosch electronics as VW/Porsche/Audi use.