Trailer Wiring Harness Recommendation for 2018 Toyota Highlander  

The Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector #22119 will have the connectors behind the side trim panels in the cargo area on the driver and passenger side. Farther to the sides behind the…

I recommend using the etrailer #e98844 which will give you the 2" receiver you're looking for, so it's ideal for carrying a bike rack or other hitch mounted accessories. This hitch is confirmed as a fit for your 2018 Toyota Highlander.…

To install a 7-way wiring kit on your 2018 Toyota Highlander the #22119 that you referenced is the correct part number. This plugs in to the wiring your 4-way already plugs into. I attached an install video for this on a similar 2018 Highlander for…

The Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector #22119 has an 18 gauge blue wire as you stated. This wire is run to the reverse light circuit at your tail lights. It should be a red wire…

For your 2018 Toyota Highlander the etrailer hitch part #e98844 is what I recommend for you as it allows you to keep the full-size spare like you want as long as it is not on an aluminum rim. The Highlander aluminum rims are too wide for all of the…

The Redarc Tow-Pro Liberty Brake Controller part #RED24FR and the Redarc Tow-Pro Elite Trailer Brake Controller part #RED44FR have two primary differences. The Elite can toggle between a user controlled (time delayed) mode for the trailer brakes for…

The trailer lighting circuits of the Tekonsha harness part #22119 that you referenced will be fully functional without having a brake controller installed. Brake controller circuits are totally independent from the light functions.

There is not a 25-amp fuse or fused connection with the Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector #22119. The kit comes with two 30 amp fuses, a 15 amp fuse, and a 10 amp fuse. The 30 amp…

If your 2018 Toyota Highlander didn't come with the factory tow package then I highly recommend installing the Tekonsha OEM Replacement Vehicle Wiring Harness #22119. This comes with everything that you need for a fully functioning 7-Way plus it…

I spoke with my Rep at Air Lift and the air helper springs item #AL60732 are not confirmed to fit your 2017 Toyota Highlander. We do have an option for you though. SuperSprings offers a Coil SumoSpring item #CSS-1145 for the 2017 Toyota Highlander…

For some reason Toyota isn't very forthcoming with how to figure out if you have the tow package or not. From my understanding all of the V6 models of the 2019 Toyota Highlander have the tow package but it isn't specified as to what else…

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…