How to Install a 7-Way Wiring Connector and Brake Controller on a 2000 Toyota Tundra SR5

Question

Question:

I need to find the correct wiring harness and correct wiring instructions for a 7 round wiring harness and the trailer break box for my 2000 Toyota Tundra. I currently have a factory 4 pole flat harness and a reese towing hitch receiver. I have a 4.7L V8 engine and this is an SR5 extended cab model.

asked by: Paul R

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Expert Reply:

If you are going to be installing a brake controller and the 7-Way plug at the same time on your 2000 Toyota Tundra, I would actually recommend getting the brake controller installation kit # ETBC7, which includes the # 37185 adapter, as well as everything else you will need to complete the brake controller installation.

To install the #37185 adapter, you would first plug it into your 4-Way connector, and then connect the additional wires.

The additional wires would be installed as follows:

White: Ground, attached to a suitable location on the vehicle frame.
Black: 12v power lead wire, run to the vehicle positive battery terminal, with the 40amp circuit breaker included in the # ETBC7 kit.
Blue: Electric brake wire, connected to the blue electric brake wire coming from the brake controller in the vehicle cab.
Purple: This is an auxiliary wire, and can be used as a 12v power source, or to power a reverse light or reverse lockout function if needed. If not, this wire can be tied up.

If you do not already have a brake controller, I would recommend that you use the Prodigy brake controller # 90885. This brake controller includes a pigtail that you will use to hardwire the unit to your vehicle.

The pigtail has four wires that will need to be connected as follows:

The 4 brake controller wire functions are:

White: Ground, attached to a clean piece of unpainted metal.
Black: 12v lead, attached to the vehicle positive battery terminal with either the 20amp or 30amp circuit breaker included in the # ETBC7 kit. Use the 20amp breaker if your trailer has 2 to 4 brakes, or the 30amp if the trailer has 4 to 8 brakes.
Blue: Electric brakes, attached to the blue electric brake wire from the # 37185 adapter.
Red: Stoplight switch, normally located directly off the vehicle's brake pedal.

To give you a closer look at how the adapter and brake controller would connect to your vehicle, I am including links to a set of videos demonstrating an installation on a similar Toyota vehicle.

expert reply by: Sarah L

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Answer 1

To install your Tekonsha Prodigy on your 2000 Toyota Tundra, you will need the Brake Controller Install Kit, part #ETBC7. The kit includes all necessary parts and hardware for installing a controller on your vehicle. We have some online resources you…

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Answer 2

According to Curt, all models of the 2001 Tundra have the tow package connector located by the driver's side frame rail as shown in the provided photo. If you'd like a mounting bracket, I'd recommend #18140 that would attach to the hitch…

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Answer 3

That will depend on the amount of brake axles your trailer has. . The 20 amp breaker like #9506P is for 1 and 2 axle brakes, and the 30 amp like part #38630 is for 3 and 4 axle brakes

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Answer 4

You'd want to use the 20 amp circuit breaker like #PK54220PL unless your trailer has more than two brake axles. If that's the case you'd want to use the 30 amp breaker #38630.

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Answer 5

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 6

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 7

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 8

You do have the option to utilize the air brakes on your 2023 Freightliner Cascadia to control electric trailer brakes using the Hayes Air Actuated Trailer Brake Controller, part #HA100400C. However, we mostly recommend just using an electric brake…

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Answer 9

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 10

Hey Antoine, so the two kits you mentioned are actually really similar and honestly I would go with the part #ETBC7 if I were you. The #ETBC7L is basically the same thing minus a couple wires and breakers so you may as well get the kit that has…

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Answer 11

Hey HPA, I would go with the Air Lift kit part #AL64VJ that fits your 2019 Toyota RAV4 based on what you described and your needs. This gives you adjustable support that you can tailor as needed so that you get the exact amount of support you need…

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Answer 12

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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