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Where to Buy the Brake Controller Installation Harness on a 2003 Toyota Tundra  

Question:

Hello, I recently purchased a used 2003 tundra that doesnt have the stock brake controller wiring harness do you have any ideas where I can purchase this? Thanks

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Expert Reply:

If you are referring to the Tekonsha Plug-In Wiring Adapter part # 3040-P that will plug into the harness you have underneath your dash to the left of the steering column you could get it from us.

If you are referring to the harness the # 3040-P plugs into on your 2003 Toyota Tundra you would have to find that at a Toyota dealer.

If you do not have any trailer wiring harness at the rear of your vehicle you would need to first start with a 4-way. For that you would want part # C59496.

Then you will need to install a Brake Controller installation kit part # ETBC7. Installation instructions and video attached as well.

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Jameson C

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