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Routing Power Wire Through Firewall on 2021 Toyota Highlander  

Question:

I cannot find a way to pass the power wire through the firewall of a 2021 Toyota Highlander gas model, not hybrid version. I see no open grommets, what is the best way through the firewall to get power directly from the battery.

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Expert Reply:

You will want to select the grommet around the steering column and feed through that. The correct Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter for a 2021 Toyota Highlander is # TK57VR.

Please note the linked installation video.

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Michael R

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