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Amplifier Bypass Harness: The amplifier bypass harness
prevents you from having to cut your vehicle's factory radio plug when replacing
your factory radio with an aftermarket head unit. Simply solder or crimp the amp
bypass harness to your aftermarket head unit's harness (solder & crimps not
included), plug the aftermarket head unit's plug into the rear chassis of the
aftermarket head unit, and plug the amp bypass harness into your vehicle's
factory amp socket.
Note: Installation tools, hardware, & accessories are
not included & sold separately. Please see the Accessories tab for
recommendations & availability.
Wiring Notes: If the Crutchfield wiring harness is not
equipped with a ground wire, you will need to ground the aftermarket head unit's
ground wire to the metal chassis of your vehicle. Some vehicle's may require you
to bypass the vehicle's factory amplifier (in another location from factory
radio) or hardwire certain connections. If your vehicle is equipped with factory
steering wheel controls, an additional adapter is required & sold separately.
Wire Code Chart:
||+12 Volt Accessory
||+12 Volt Constant
(Amp Bypass Harness)
||Left Front Speaker +
||Left Front Speaker -
||Right Front Speaker +
||Right Front Speaker -
||Left Rear Speaker +
||Left Rear Speaker -
||Right Rear Speaker +
||Right Rear Speaker -
||Subwoofer 1 +
||Subwoofer 1 -
||Subwoofer 2 +
||Subwoofer 2 -
Harness Location: The factory plug that mates with the power
harness is located in the factory radio cavity of the vehicle. The factory plug
that mates with the amp bypass harness (used to bypass factory amp) is located
at the external factory amp location (passenger side-kick panel). The 17' amp
bypass harness will need to be plugged into the external factory amp and then
run up to your in-dash aftermarket head unit for speaker wire connection.
Note: An external aftermarket amplifier is recommended
to connect the factory subwoofer channels (if present) of the wiring harness
in order to power your vehicle's factory subs.
The Crutchfield Car Selector: Please visit the
Crutchfield Car Selector for
your specific type of vehicle.