When I purchased my Model S 85 D just over a year ago one of the big concessions I made when purchasing it was giving up my ability to tow trailers or use my trailer hitch bike rack. I knew there was an aftermarket trailer hitch option, but I was a little scared to take my Tesla apart, and I didn’t want to pay lots of money for someone else to do it. After researching it more I decided to take the plunge and DIY it. I had some great friends come help me which was helpful and I was able to make a video of how to do it. I found a couple other installation videos on YouTube for the Model S, but it was for the newer Model S. After hours of searching I found zero instructions on how to do the trailer wiring in my Model S! I hope this empowers others to be able to DIY the installation because it turned out to not be overly difficult in my opinion. I’ve now had it installed for nearly 3 months and I’ve loved the functionality it provides!
In my case I also installed trailer light wiring (which was a lot more difficult to figure out, but I succeeded!) and now I’ve been able to take our small 14 foot fishing boat to multiple lakes, I’ve towed a small camping trailer, small utility trailer, large utility trailer and used our trailer hitch bike rack. I highly recommend doing it if you’ve ever thought it would be useful functionality to have. Feel free to ask any questions you may have and I’ll do the best I can to answer them based on my experience.
This is a video I created on the why, parts and costs associated with the installation
This is my trailer hitch installation instruction video
In my case I also installed trailer light wiring (which was a lot more difficult to figure out, but I succeeded!) and now I’ve been able to take our small 14 foot fishing boat to multiple lakes, I’ve towed a small camping trailer, small utility trailer, large utility trailer and used our trailer hitch bike rack. I highly recommend doing it if you’ve ever thought it would be useful functionality to have. Feel free to ask any questions you may have and I’ll do the best I can to answer them based on my experience.
This is a video I created on the why, parts and costs associated with the installation
This is my trailer hitch installation instruction video