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Tekonsha Powered Tail Light Converter w/ 4-Way Flat Trailer Connector and Install Kit
TeslaThe wiring harness and trailer hitch from ETrailer work great. No issues whatsoever. It works as it should. FTIW, I have self-installed hitches in the past on other cars and consider myself a savvy shade-tree mechanic. Although the installation of both products didn't look that difficult, and there are a wealth of vids by etrailer, my problem was the jacking and safe under-body access on the Tesla. I just don't have the facilities, and was wary by the weight of the car plus warranty issues. So I opted for a pro intsall job. Given the nature of the beast, and this is no reflection on etrailer, if I were doing it again I'd prob just spring for the pricey Tesla install. Since I live in the sticks, I had to drive pretty far anyhow to find an installer, let alone a good one. The bumper removal etc. for the hitch install isn't difficult, just that pesky wiring and a safe work condition.
Install on 2018 Mercedes Benz CLA250 w/LED tail lights: There were no guides I could find so I'm posting this for other etrailer customers. These are my installation notes and the kit operates correctly. There are other ways to do this, I'm sure. It isn't necessary to remove the tail lights, there is a removable piece in the trunk carpet. I removed that and the plastic trim panel in the middle. The tail lights have 10-pin connectors. On the left there are 8 wires on the right there are 7. My thought is maybe this has something to do with the european style parking lights. After probing I found this: Left Side: Turn/Brake - Yellow with White stripe Running/headlights - Black with Orange stripe There is constant power to the Green with White stripe Right Side: Turn/Brake - Light Blue with Red There is constant power to the Green with White stripe I had to splice additional wire to mount the module where I wanted it. The final connections were: Module Brown to Left Black/Orange Module Yellow to Left Yellow/White Module Green to Right Light Blue/Red Module White to Ground Module Black to Battery Module Red Terminated (unused) The positive electrical connection I made was under the hood, off the fuse box. Terminated to one of the lugs, covered with wire loom, and run into one of the cars wire bunches. The 4-wire hitch output is terminated with a CURT tester (If you put one there, you'll always know where it is when you need to troubleshoot something) This vehicle is completely covered on the bottom and running the wire can be very time consuming if you want it to look tidy.
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