Matt Lane

Hi John, maybe try reaching out to the guys below (they took over the Wilwood hitch business).

I remember installing a generic (Curt?) wiring harness based on their recommendation?

Edit - yup, it was a definitely a powered Curt wiring kit, mounted to the left rear tail light. The powered box is small, the size of deck of cards. I have it stuck to the engine bay with double sided tape. Then again, this is a 2004, not a 2015.

Porsche 911 Trailer Hitch | SporTTows

steved0x

For 2015 try hanksville hotrods 981 trailer hitch and they may have some wiring. I have a friend also that made his own for 981, send me a pm and I'll see if I can get his contact info. He was going to do the hanksville but ended up fabbing his own and may have the wiring info as well.

Zach L

I ordered from SporTTows in late 2018 and installed the receiver on my 2006 Cayman S, then upgraded to a 2012 Cayman R and transferred it over. Took a few weeks to get the parts, but everything arrived and it works great. Unless you flip up my rear license plate, there's no indication the car has a hitch. Highly recommend.