Adding a 7-Way and Brake Controller to a 2010 Toyota Tundra with Factory 4-Way Trailer Connector

Question

Question:

I want to install a 7 pin plug and a brake controller, my truck has a 4 pin flat plug near the bumper, and from there it runs back to around the spare to another plug and then from there it goes into the truck someplace, it has another plug next to it but nothing is plugged into at all on either end. Is this the part I need to install a 7 pin? I have seen other videos of hooking a brake controller to this model truck is just plugging it into a plug already under the dash. Is there another wire I need to buy to plug into that empty plug near the rear of my truck to connect to the brake controller thru the factory plug under the dash?

asked by: Shelly

0

Expert Reply:

First, you will need to determine if your 2010 Toyota Tundra has a port under the dash for a brake controller. The port is located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal. Take a look at the video I have linked that should help you find the connector, if present.

If it is not present then to add a brake controller you will need to do a complete hardwire installation which does require # ETBC7. I have included some links to the right that show and explain the ETBC7 installation.

If the brake controller port is there then you can still use # ETBC7 but you will not follow the instructions exactly the same way as with a complete hardwire. You would use a harness that fits the brake controller and the port on the truck. You would sever the blue wire from the end of the harness that plugs into the truck under the dash and hardwire that to the wire ran up from the ETBC7 to complete the installation.

For a brake controller I recommend the P2 # 90885 because it is easy to set up and use and it is reliable. And if your truck does have the port under the dash you will also need harness # 3040-P

expert reply by: Michael H

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Answer 1

I am not aware of a bolt-on version of the Buyers Products Weld-On Safety Chain Retainer part #3375471000. However, if all you were wanting to do is mount your safety chains to the tongue of your trailer then you will just simply do so by running a…

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Answer 2

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 3

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 4

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 5

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 6

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 7

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 8

Yes you can.

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Answer 9

I would be happy to help. The Tekonsha P3 brake controller you referenced would be an excellent choice for you. The P3 is extremely easy to use, and has controls that are intuitive and simple to understand. The diagnostic feature is unique in that…

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Adding a 7-Way and Brake Controller to a 2010 Toyota Tundra with Factory 4-Way Trailer Connector

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