Recommended 7-Way Wiring For 2012 Toyota Highlander And Multiple Trailers

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Question:

I am upgrading a 99 Burro 14 camper trailer. My 2012 HIGHLANDER AND IT BOTH CURRENTLY HAVE 4 PIN FLAT oops connectors. I want to convert to a round socket on a bracket, and still have a 4 pin socket for my utility trailer, etc. I may add electric brakes later, and battery charging wire. I dont mind if there are extra unused pins. Round pin vs flat blade? Which is better? Prices are similar.

asked by: Bill K

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Expert Reply:

Since you already have a 4-way flat connector, I recommend using the Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires, # ETBC7. This kit will simply plug into your current 4-way and give you a 4-way and 7-way connection option. The 3 remaining functions of 12V power, electric brakes, and reverse lights can be connected or saved for a later time. I recommend making the connections and being ready for the future towing of a trailer with brakes. This kit will give you the wires, connections, and circuit breakers you need to complete the 7-way vehicle side wiring. If you choose not to do that at this time, you can simply use the Hopkins Adapter 4-Pole to 7-Pole and 4-Pole, # 37185, and complete the rest at a later date using the Wiring Kit for 2, 4, 6, and 8 Brake Electric Trailer Brake Controllers, # 5506. The 7-way RV connector is the standard for vehicles with a tow package and trailers with brakes. It will give you a more universal application for towing than a flat connection.

If you decide to add a brake controller now, I recommend the Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional, # 90195. This controller will apply the same amount of braking force to your trailer as you apply to your brakes within your Highlander. It has an easy to read LCD display that will help you with diagnostics and troubleshooting without needing to decipher lights and codes. It has 3 levels of boost and is customizable to your desires.

For the trailer side wiring conversions, I recommend the 7-Way Molded Trailer Plug with Junction Box # HS381-9000. This will allow you to make clean connections now, and add connections with ease at a later date. I've attached an article on wiring for you.

expert reply by: Jason S

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Answer 1

I would be happy to help you set up your 2022 Toyota Highlander to haul your new travel trailer. The wiring harness you currently have controls your trailer's lighting functions only. You do not need to rewire your Toyota you just need another…

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Answer 2

The best way to determine if your 2012 Toyota Highlander has a factory tow package is to have a Toyota dealer run the VIN number in their computer system. They can tell you how the vehicle is equipped that way. If they say you do not have the tow…

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Answer 3

Yes, you will be able to keep your 17 inch spare tire as a spare on your 2012 Toyota Highlander with this Draw-Tite Hitch #75586. I attached a picture of this hitch installed on a similar Highlander as yours with the spare also retained. To complete…

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Answer 4

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 5

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…

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Answer 6

If you have a vehicle specific wiring harness for a brake controller then that would indicate that you have a factory tow package and subsequently would already have a 7-way at the back of your vehicle. The universal 7-way connector #ETBC7 is meant…

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Answer 7

The best brake controller option to go with is one that activates the brakes proportionally instead of time delayed. A proportional brake controller will activate the trailer brakes at the same time and with the same intensity as the tow vehicle…

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Answer 8

The first thing you will need for your 1999 D250 is a 4-way. The Curt T-Connector Vehicle Wiring Harness #C55317 plugs into the connection points behind your rear bumper and will allow you to power your trailer's signal lights. Once the 4-way is…

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Answer 9

Yes you can.

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Recommended 7-Way Wiring For 2012 Toyota Highlander And Multiple Trailers

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