How to Connect Trailer 7-Way to 2017 Toyota Highlander with Factory 4-Way

Question

Question:

We recently purchased a 2017 Toyota Highlander with the tow package. It came with a 4 pin connection but our Coleman popup had a 7 pin connector. How can I make this work?

asked by: Gary

0

Expert Reply:

We have just what you need to tow your camper with your new 2017 Toyota Highlander.

First, if your Coleman Popup Camper does not have electric brakes and you are only needing to power its rear signal lights, I recommend installing the Tow Ready Adapter Vehicle End # 30717. This will plug right into the 4-Way connector on your Highlander to provide a 7 pole round plug to hook up with your trailer. You will simply tie off the remaining wires from the adapter as they will not be needed in this application.

If the camper does have electric brakes and you want them to function, you will instead need to install the Universal Wiring Kit # ETBC7. This kit will include everything needed to install a fully functional 7-Way connector from the 4-Way on your vehicle. I have attached an article that details the installation steps for this kit.

To control the brakes on your camper, you will also need a trailer brake controller like the excellent Tekonsha Prodigy P2 # 90885. This is a great proportional controller that will activate the trailer brakes at the same time and with the same intensity that you apply to them in your Highlander. It features an easy to read digital display along with continuous diagnostics to alert you to any potential issues. I have attached a video demonstration and the installation instructions on this product for you to check out.

expert reply by: Chris R

0

Artur

8/10/2020

I need a solution to connect my 2017 Highlander to a travel trailer with brakes. I am seeing two harnesses that would potentially work: Item # ETBC7 (mentioned above) and Item # ETBC7L. I would like to connect it to a wireless Brake Controller like Item # C51180. I understand that each harness has a "blue" wire for output of the brake controller. How would I go about using a wireless brake controller with one of the above mentioned harnesses? Thank you in advance!

Jon G.

8/21/2020

For your 2017 Toyota Highlander you need to have a 4-Way installed, I recommend the T-One # 118449 if you don't have the factory tow package or the Hopkins # HM11141825 if you do, then the Upgrade Kit # ETBC7L to use the Curt Echo # C51180. For the Echo you will actually just be running a 12V power wire to power the brake controller. You won't be running the blue wire up to the cab because that wire is used when hardwiring a brake controller.

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Answer 2

Yes, you will likely see the issue of the malfunctioning Pre-Collision System (PCS) on your 2018 Toyota Highlander with the Tekonsha Primus IQ Trailer Brake Controller #TK90160. So you can do is the Roadmaster Single Park Light Diode #RM-690.

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Answer 3

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Answer 4

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Answer 5

Yes you need the diode arrow to point towards the brake controller. That will allow the voltage to travel into the controller but not backfeed back on to the Highlander in any way. If you need a diode we have the part #RM-690.

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Answer 6

You'd just have to cut the connector your Voyager has now off so that you can hardwire the #7865 to it matching color for color since yours was already cut and wired. We don't have a harness that fits to factory wiring of your vehicle.

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Answer 7

Since you said you do not have a towing package on your 2015 Highlander, you will first need to start with a 4-way wiring harness like part #118449. This harness simply plugs into the connection points located in the rear cargo area as shown in the…

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Answer 8

As you said, we typically recommend grounding directly to the vehicle battery when doing a hardwire install using the #ETBC7 install kit. From what I understand, the suggestion for using a chassis ground is mainly meant for vehicles with CAN bus…

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Answer 9

When mounting 7-way brackets you actually don't want to attach to the frame of the hitch by drilling into it. The best place to attach the bracket of the #ETBC7 that holds the 7-way should be on the bottom of the rear bumper.

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Answer 11

The custom trailer wiring harness for your 2018 Toyota Highlander with the tow package is part #HM11141825; however, it's only a 4-way connector. To get a 7-way on your Highlander start with the #HM11141825 4-way and then use our #ETBC7 kit to…

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Answer 12

Yes, the Tekonsha OEM Replacement Vehicle Wiring Harness item #22119 will fit your 2019 Toyota Highlander. This will provide you with a 7-Way connector and a Tekonsha brake controller adapter. This wiring harness is custom fit and plugs directly into…

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How to Connect Trailer 7-Way to 2017 Toyota Highlander with Factory 4-Way

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