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Metra 70-6504 Amp Bypass Harness
Allows you to install a new car stereo and bypass the factory amplifier in select Jeep, Chrysler, and Dodge vehicles
Item # 120706504 | MFR # 70-6504
$34.99 Earn up to 35 Rewards points
Our take on the Metra 70-6504 Amp Bypass Harness by Crutchfield's Charlie Pastorfield
This Metra 70-6504 amp bypass harness allows you to install a new car stereo in your car without having to cut the factory wiring.
Simply splice the color-coded wires on your Crutchfield integration adapter 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 integration adapter 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: 60 days.
Note: This integration adapter bypasses your factory amplifier. In order to install it and make the necessary connections, you will need to run wires from the adapter to a switched power source and to your factory amp location above the kick panel on the driver's side. You'll lose the factory subwoofer when the amp is bypassed.
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.
Note: Most vehicles will require additional installation parts please identify your vehicle if you haven’t done so. You can also call an Advisor for more information.
Used with Kenwood receiver that replaced the OEM Infinity system. Perfect-made the installation easy. Plenty of extra wire length to allow almost any routing desired.
Doug, Casper, WY
What's in the Box:
- 6" Constant Power/Ground harness
- 17' Speaker harness
- 17' Tweeter/Center channel harness
- 42" Switched power wire
- Fuse tap
Metra 70-6504 Amp Bypass Harness Reviews
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Wiring Harness: This wiring 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 wiring 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 wiring harness into your vehicle's factory radio plug.
Note: Installation tools, hardware, & accessories are not included & sold separately. Please see the Accessories tab for recommendations & availability.
Wiring Notes: If the 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:
(Constant Power/Ground Harness)
|Yellow||+12 Volt Constant|
(Tweeter/Center Channel Harness)
|Yellow/Blue||Left Front Tweeter +|
|Yellow/Black||Left Front Tweeter -|
|Yellow/Red||Right Front Tweeter +|
|Yellow/Orange||Right Front Tweeter -|
|Brown/White||Center Speaker +|
|Blue/Pink||Center Speaker -|
(Power/Front Speaker Harness)
|Green||Left Rear Speaker +|
|Green/Black||Left Rear Speaker -|
|Violet||Right Rear Speaker +|
|Violet/Black||Right Rear Speaker -|
|Gray||Right Front Speaker +|
|Gray/Black||Right Front Speaker -|
|White||Left Front Speaker +|
|White/Black||Left Front Speaker -|
- There is no switched power wire in any of the harnesses. An additional 42" red wire is included, along with a fuse tap to access a switched +12 volt source in the fuse block.
- The center channel speaker, if present, is not used in most aftermarket systems.
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Why did you buy this?
Was required for install [ Mark Jun 12, 2017 ]
Was suggested for install for stereo [ Jamie Dec 17, 2016 ]
came as part of the installation kit for my SUV [ Edwin Nov 27, 2016 ]
It works [ jorge luis Aug 26, 2016 ]
Bypassing factory car amp for my 2006 Dodge Magnum. [ Ramon Apr 03, 2016 ]
My factory amp will handle the sound, but I will lose fader functionality. This will allow the use of the built in amp in the stereo and have a fader. [ JOSH Apr 01, 2016 ]
Need it [ Sara Mar 14, 2016 ]
I wanted a harness I could use to bypass my factory amp without having to cut any wires and save me time [ gomezj22 Feb 22, 2016 ]
This item is a must have for my van [ David Feb 12, 2016 ]
1 question already asked
1 answer OK, So what I want to do is delete the OEM amplifier and run my head unit direct to the speakers without running all new wires to the doors and under the carpet and removing body panels. I'm not sure how this harness does all that, or if it does all that. Seems like what I would need would have two connectors at each end. One to connect the head unit input side into the amplifier output side. Right? [ ernievb Feb 11, 2015 ]
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy Feb 12, 2015 ] Staff