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Does Brake Controller Install Harness for 2015 Toyota Tundra Have Extra Ground Wire  

Updated 03/05/2020 | Published 09/02/2018

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Question:

Where is the best place to connect the ground wire for a tekonsha P3 on a 2015 Tundra. I bought the wire harness adapter. Can I get away without doing it.

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Expert Reply:

The brake controller harness part # 3031-P which is the correct one to install the Prodigy P3 part # 90195 in your 2015 Toyota Tundra does have a ground wire that needs to be ran outside of the harness as well. We drilled a hole on the firewall when we installed the ground strap as we found that to be the easiest when we used this harness to install a controller in a 2013 Tundra like yours. See video I attached.

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Jameson C
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Qoua

3/4/2020

Where can i mount the ground wire?

Chris R. profile picture
Etrailer Expert

Chris R.

3/5/2020

Any nearby bare metal portion can be used to ground the white wire. A lot of times the parking brake pedal bracket is a good location for this. Skip ahead to the 1:10 mark on the video I attached to see this in action.

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