Model: HRN-HRR-TO1
from $79.99
The Firstech TO1 T-Harness is a gray radio replacement harness designed for select Toyota and Scion vehicles from 2004 and up that utilize HU connectors. This car wiring harness simplifies the installation process for aftermarket audio systems, providing a direct connection without the need for cutting or splicing factory wiring. Weighing 1 lb and measuring 8 x 2 x 5 inches, it offers a straightforward solution for integrating new audio visual and entertainment components into compatible vehicles.
A vehicle-specific harness is mandatory to avoid cutting factory wires. Modern cars require 'smart' interface modules to retain steering wheel controls and warning chimes. Available from $79.99.
Wiring harnesses have zero ongoing costs. Once installed correctly, they last the lifetime of the vehicle unless damaged by pests or physical modification.
Common Failure Modes
Failure is almost always due to poor installation, such as loose crimps or exposed wires shorting out. Vibration over time can cause poorly routed wires to chafe.
A vehicle-specific harness is mandatory to avoid cutting factory wires. Modern cars require 'smart' interface modules to retain steering wheel controls and warning chimes.
Wiring harnesses last the life of the vehicle unless damaged by pests, heat, or modification.
The Firstech TO1 T-Harness for Select Toyota and Scion Vehicles 2004 and Up is available at crutchfield, abt, starting at $79.99.
Wiring harnesses have zero ongoing costs. Once installed correctly, they last the lifetime of the vehicle unless damaged by pests or physical modification.
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