if you are lowered, this may not work for you. Got the PWM from etrailer, but wasn't a plug and play install despite what the website says. Had to get creative to make all lights function. Trying to remember the details(it was 2 years ago).. had to pin out the right rear tail light connector and went from there. The Curt PWM is missing either an input or output. It should work fine for the 2012 Avant though.
Edit: don't have to cut the valance, only the heat shield for the mufflers to uncover one of the mounting bolt holes. Just checked their website, it says Updated PWM. It should work.
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