Had a four pin been installed, I might have been able to use it's output to the seven pin.. Lacking that, which would have required reprogramming of the trailer module by Volvo, I had an auto stereo place install relays for each of the functions, necessary to not mess up the Volvo sensitive wiring s...

Has anyone successfully wired a 2010 v70 to a seven pole connector. I had the Volvo dealer install their trailer wiring module and connect it up, but only the running lights work, no stop or turn signals. I had an aftermarket trailer service attempt to wire it using the conventional method, i.e. tap...