Brake Controller Recommendation for 2018 Toyota Tundra to Replace OEM Controller
Updated 07/21/2025 | Published 07/18/2025
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Question:
Im looking to replace my integrated brake controller on my 2018 Toyota tundra. It always disconnects from the trailer, seems to be a wide spread problem for this year. Ive read that a lot of people go with the TEKONSHA P3 BRAKE CONTROL. I like it cause it can fit where the old brake controller goes. When I get on your website it says its not compatible with my truck. I was wondering why that is. Is it because of the wiring harness that comes with it? Is there a wiring harness for this year. If not is there another product that will fit in the space of the old integrated brake controller. I like the idea of a plug and play controller as well. Thank you
asked by: Jared L
Expert Reply:
Hey Jared, so the P3 part # 90195 is a great option for a brake controller for your 2018 Toyota Tundra but oddly enough Tekonsha doesn't have an install harness so you'd have to use the Curt # C51455 and wire it directly to the universal harness that comes with the P3 and then plug that in under your dash.
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Jared
7/21/2025
U wouldn't happen to have the wiring diagram for that would u? I appreciate u answering all my questions. Toyota and the dealers are no help with this. If u did have some type of wiring diagram I could attempt it or take it to a shop and have it done. Thanks Jared