Parts Needed to Install a 7-way in a 2002 Toyota Tacoma and Charge a Battery on the Trailer

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Question:

My trailer has a 7 prong system. I am looking for a wiring harness that works on my 2002 Toyota Tacoma. There is a trailer brake too. Is there a harness that’ll allow the truck to charge the battery? Thank You.

asked by: Daniel

0

Expert Reply:

It sounds like your trailer has a 7-way plug and your 2002 Toyota Tacoma does not. If your Tacoma has a 4-way installed already, you can use the Universal Installation Kit for Trailer Brake Controller # ETBC7 to adapt the 4-way into a 7-way. If it does not have a 4-way, you would need to add a 4-way first. This can be done using the T-One Vehicle Wiring Harness # 118379.

Since your trailer has brakes, you would also need a brake controller if you do not already have one. I like the Redarc Tow-Pro Elite Brake Controller # RED44FR because it has a small knob instead of a bulky controller and provides a much more sleek appearance when installed.

If you are wanting to charge the battery as well, you would want to add the Redarc In-Vehicle BCDC Battery Charger # RED96FR.

expert reply by: Scott S

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Answer 1

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Answer 2

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 3

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 4

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 5

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 6

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

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Answer 7

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

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Answer 8

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

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Answer 9

The main difference between the Curt Trailer Hitch Receiver part #C13416 and the EcoHitch Hidden Trailer Hitch Receiver part #EH97FR is that the EcoHitch has a completely hidden cross tube whereas the Curt cross tube will be visible from the rear of…

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Answer 10

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 11

Hello Matt, Thanks for writing in! I'm glad you found us. We did originally have the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector #118784 listed as a fit for the 2025 Hyundai Santa Cruz. However, we had to remove it from our…

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Answer 12

Hey George, for your 2026 Toyota RAV4 Hybrid we have the Curt hitch part #C34FR62ZY as a confirmed fit but it's on a little bit of a backorder at the moment which is why you don't see any hitch options in our fitguide. The hitches from…

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Parts Needed to Install a 7-way in a 2002 Toyota Tacoma and Charge a Battery on the Trailer

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