2002 Toyota Tundra Does Not Have Correct Plug to Match Recommended Custom Wiring, What Can I Use?

Question

Question:

Connection will not fit. My 2002 tundra

asked by: David C

0

Expert Reply:

It looks like the 2002 Toyota Tundra should have an 8-pin square connector on the rear of the vehicle for the trailer wiring, and from the photo you're showing that is definitely not an 8-pin square connector; it's a 6 pin square. One of two things could have happened here.

I would first make sure that you've pulled the correct plug, since there are two very similar plugs placed right next to eachother on the 2002 Toyota Tundra. I've taken a screenshot of our installation video as a reference where it shows the two plugs- one will be a bit bigger than the other, and that's the one you want.

If you've pulled the correct plug, and there is no 8 pin square connector at the rear of your Tundra it's possible that there is a different tow package plug back there and you won't be able to use the Tekonsha # 118378. If you're not the original owner of this vehicle, it could be that the previous owner damaged the tow package wiring and replaced the harness with one that doesn't match up (it actually looks like that could be the plug off of a 2001-02 Toyota Sequoia).

If this is the case, you'll want to cut that plug off and hardwire in a universal 4 way like the Hopkins Endurance # HM48240. You'll want to test each of the exposed wires from the cut off end for their functions and then match them up according to the wiring diagram included in the instructions. I've linked an installation video on the Hopkins to help you along with this process as well as the video for the Tekonsha # 118378 for you to have a look at as well.

expert reply by: Erik B

0

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Scott G.

7/29/2024

Yes, I was using the plug right behind the hitch. Found the one hiding behind the left taillight. Fit perfectly! Thanks for the followup! What is the one behind the hitch for, anyway? A trailer with it's own brakes? -Scott

Answer 1

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Answer 2

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Answer 4

If you removed all of the wiring of your 2002 Toyota Tundra when you removed the bed you'd want a 7-way kit like the part #20023 which will wire into the truck's current wiring. Otherwise the 4-way kit part #118378 plugs into factory wiring…

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Answer 5

To add a 7-way connector to your 2002 Toyota Tundra you will need the Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires item #ETBC7. The kit includes a pre-wired 7- and 4-way trailer connector that…

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Answer 6

Universal trailer wiring harness with brake controller harness #22551 is a universal fit type of item so there are no vehicle specific installation instructions. I have included a link to the instructions that it does have for you. Another option is…

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Answer 7

The Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Flat Connectors #HM43385 is a fit for 2003 - 2006 Toyota Tundra with factory 7-Way. For your 2000 Toyota Tundra, there is only a 4-way trailer connector available…

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Answer 8

Since your 2002 Toyota Tundra does not have the factory towing package you will need to install the Curt T-Connector Vehicle Wiring Harness item #C55378. This custom-fit T-connector plugs into your Tundra's existing wiring harness behind the rear…

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Answer 9

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Answer 10

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Answer 11

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Answer 12

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2002 Toyota Tundra Does Not Have Correct Plug to Match Recommended Custom Wiring, What Can I Use?

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