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Fortin THAR-ONE-TOY1 T-Harness

Allows you to connect the EVO-ONE module in select 1995-up Toyota and Scion vehicles

Item # 938THTOY1

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Item # 938THTOY1

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About the Fortin THAR-ONE-TOY1 T-Harness

Save yourself some time

Fortin's THAR-ONE-TOY1 interface harness comes in handy when you're using an EVO-ONE databus module to install a remote start system in select Toyota-built vehicles, saving you hours of installation time and wiring hassles. The THAR-ONE-TOY1 allows plug-and-play installation in some instances, but will require additional connections of up to four wires in most vehicles. Warranty: 1 year.

What's in the box:

  • THAR-TOY1 harness
  • Installation Guide

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Fortin THAR-ONE-TOY1 T-Harness reviews

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Fortin THAR-ONE-TOY1 T-Harness

Marc from Willow Grove, PA on 11/17/2017

2010 Ford Fusion

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Makes plug and play installation of the Fortin Evo-One super easy!



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Fortin Toyota T Harness

cmiller from Connecticut on 12/27/2015

2013 Toyota Sienna

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Makes installing a remote started pretty easy

Pros: Goes into place in literally minutes

Cons: There is a wire from the 20 pin connector Pin A1 yellow that needed to be spliced into the T harness and they had no provision for it. I basically stripped some insulation on the brand new T harness to solder in the Yellow wire. Not well thought out

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More details on the Fortin THAR-ONE-TOY1 T-Harness

Russ B.

Product Research


Overview: The Fortin THAR-ONE-TOY1 is a pre-wired T-harness for select Toyota and Scion vehicles for installing the EVO-ONE remote start/security system. The T-harness is designed to shorten the installation time of the remote start/security system in compatible vehicles by making many of the connections via direct plug-in harnesses.

Note: This is a complex product, and it is recommended that installation is performed by a professional installer or experienced do-it-yourselfer.

Compatibility: The THAR-ONE-TOY1 is currently compatible with 113 vehicles, including select 1995-up Toyota and 2008-up Scion regular key vehicles. Click here to see if your vehicle is compatible.

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