About the Metra 70-8121 Amp Bypass Harness
This Metra 70-8121 amp bypass harness allows you to install a new car stereo in your car without having to cut the factory wiring, and to directly connect your new car stereo to the speakers in your truck.
Simply splice the color-coded wires on your Crutchfield bypass harness to the wires from your aftermarket stereo — you can crimp or solder the connections in the comfort of your home without having to struggle with splicing wires behind your dash. Next, plug the Crutchfield bypass harness into the harness that you removed from your factory radio.
Since you didn't have to cut off your car's original radio connector, it's easier to put the factory radio back in when you sell your vehicle or return it at the end of the lease. Just plug the factory radio back in and keep the aftermarket stereo. Warranty: 1 year.
Important Note: This harness bypasses your factory amplifier. In order to install it and make the necessary connections, you will need to run wires from the harness to your factory amp location under the right rear seat.
Please enter your vehicle information or call a Sales Advisor at 1-888-955-6000 to find out if this model is compatible with your vehicle.
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More details on the Metra 70-8121 Amp Bypass Harness
Amp Bypass Harness: The Metra 70-8121 Power/Amp Bypass Harness consists of a 8" power/ground harness and 17' amp bypass harness. The 70-8121 is needed to bypass the factory amplifier in select 2005-2006 Toyota Tundra trucks, when replacing the factory radio with an aftermarket head unit.
Note: Installation tools, hardware, & accessories are not included & sold separately. Please see the Accessories tab for recommendations & availability. If your vehicle is equipped with factory steering wheel controls, an additional adapter is required & sold separately.
Wire Code Chart:
|Red||+12 Volt Accessory|
|Yellow||+12 Volt Constant|
|Amp Bypass Harness|
|White||Left Front Speaker (+)|
|White/Black||Left Front Speaker (-)|
|Gray||Right Front Speaker (+)|
|Gray/Black||Right Front Speaker (-)|
|Green||Left Rear Speaker (+)|
|Green/Black||Left Rear Speaker (-)|
|Purple||Right Rear Speaker (+)|
|Purple/Black||Right Rear Speaker (-)|
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