Review on 🔌 CUSTOM FIT - CURT 55563 Trailer Wiring Harness for Lexus RX330, RX350 - Vehicle-Side, 4-Pin Plug-In Design by Marklen Baeskens

The hardest part was pulling out all the rear plastic panels and bays. Once the connections were complete, the connections were fairly easy, except that there was no need to connect a ground wire as it was already grounded on the non-splice connections, which the instructions don't explain very well. It took a little while to route the black battery positive lead from the back to the front but not bad, I took a 4 foot piece of 12 gauge wire to run it through the engine wall and attached the positive lead to it, to pull it up to. The battery worked like a charm. I took the chance to swap out all the plastic fairings and coves before checking to make sure I wired everything correctly, to my surprise it worked. A small complaint about the length of the cables on the driver's side: there were no more extra parts to attach the box to the back wall, so I just tied it to the wiring harness.