Trailer Wiring Harness Installation - 2003 Toyota Highlander Video

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How to Install a Trailer Wiring Harness on a 2003 Toyota Highlander

Today on our 2003 Toyota Highlander, well be installing Tow Ready T-1 connector, part 118413. To begin our installation, well need remove the rear cargo cover, the spare tire cover, inside compartment cover; well also remove the panels behind the taillights. With all of our interior removed from the vehicle, well now have access to our wiring. Well need to unplug the harness at the connector just… see more >

Info for this part was:

Video by:

Andrew K

Video by:

Joshua S

Video by:

Alan C

Test Fit:

Nicholas E

Test Fit:

Rick A

Test Fit:

Shane T

Video Edited:

Mike H

Video Edited:

Dustin K

Installed by:

Cole B

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How To Determine If 2003 Toyota Highlander Has The Factory Tow Package

if your 2003 Toyota Highlander has a tow package plug located in the driver's side rear cargo area under the floor (see instructions for installing Item #118413 on where to look) then your Highlander has the tow package. If you find a plug, use a…

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Can 4-Way Trailer Wiring Harness #118413 be Routed/Mounted Outside of a 2003 Toyota Highlander

You will have to look for a grommet or other exit point at the very bottom of the cargo area of your 2003 Toyota Highlander. Remove the panels above and around the spare tire like you would when installing the wiring harness as shown in the video I…

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Connection Points for Trailer Wiring on a 2003 Toyota Highlander

I would be glad to help you out with adding trailer wiring to your 2003 Toyota Highlander. The Tow Ready Harness, #118413, is designed to plug in line with the tail light wiring behind each tail light on the vehicle. Inside the rear cargo area,…

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Can I Use Thule Hullavator On Factory Bars and How To Determine Vehicle Clearance When Loading Kayak

Thule Hullavator Pro Kayak Carrier and Lift Assist with Tie-Downs - Side Loading part #TH898 can be installed on factory cross bars as long as they are square, aerodynamic or round bars. You do want to have 4-8" of bar overhang in order for the…

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How Do I Know If My 2002 Toyota Highlander Has The Tow Package

If your vehicle has a functional factory tow package there will be a connector at the rear of the vehicle behind the rear bumper. This connector could possibly be inside a black box that is mounted under the vehicle. If the connector is present you…

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After Installing Trailer Wiring Harness on a 2006 Toyota Highlander Sport Trailer Lights Do Not Work

There are some things you can do to determine if the issue is on the harness, #118413, or somewhere else. First, make sure that the harness is grounded to a clean metal surface. There cannot be any paint where the harness is grounded. Also, if you…

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How to Find the Reverse Light Wire on a 2004 Lexus RX330

First, located the taillight wiring behind one of the taillights on the 2004 Lexus RX330. Then, use a circuit tester, like #PTW2993, to probe each of the wires until you find the one that carries a signal when the vehicle is placed in reverse. You…

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Fuse location For Trailer Lights On 2006 Toyota Highlander

If you have no power to the trailer wiring harness, the fuse panel is located in the engine compartment. I have attached a drawing that shows where the fuse panels are located on a 2006 Highlander. Per the second attached drawing the fuse for trailer…

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