About the Metra 70-6512 Amp Bypass Harness

Metra 70-6512
Metra 70-6512
The Metra 70-6512 harness enables you to install a new car stereo in your Ram truck. It uses a "jumper" to bypass the factory Infinity amplifier, which means you don't have to run new speaker wire from your new radio to your car's speakers — this saves you a lot of time on the installation, so you can start enjoying your music sooner.
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. Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this harness is compatible with your vehicle. Warranty: 1 year.
Installation Note: In 2004, Dodge offered two different amplifiers for different trim packages. The 70-6512 harness works with the SRT10 trim package without the hands-free calling option. If you're not sure, look at your rear-view mirror — if you don't see an icon of a telephone on it, this harness will work.
What's in the box:
Metra 70-6512 Amp Bypass Harness owner's manual
- 8" Power/ground harness
- 12' Amplifier bypass harness
- Installation Instructions
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Customer reviews for Metra 70-6512 Amp Bypass Harness
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More details on the Metra 70-6512 Amp Bypass Harness

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Features
Compatibility: The Metra 70-6512 is an amplifier bypass harness for 2002-2004 Dodge Ram trucks with Infinity factory amplifier. In addition to the amplifier bypass harness, a power harness is also included for your aftermarket head unit.
Notes:
- In 2004 Dodge offered two different amplifiers for different trim packages. The 70-6512 harness is designed for the SRT10 trim package without the hands free capable option. The way to tell if the vehicle has hands free option is to look at the rear view mirror and see if it has an icon of a telephone on it. If there is no icon this harness will work.
The factory amp has the crossover built in. When bypassing the factory amp be sure to use crossovers to protect the factory speakers.
The factory amp is located behind the glove box.
Wire Code Chart:
(Power Harness)
Wire Color | Function |
Yellow | +12 Volt Constant |
Red | +12 Volt Accessory |
Orange | Illumination |
Black | Ground |
(Amplifier Bypass Harness)
Wire Color | Function |
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 - |
Yellow/Blue | Left Front Tweeter (+) |
Yellow/Black | Left Front Tweeter (-) |
Yellow/Red | Right Front Tweeter (+) |
Yellow/Orange | Right Front Tweeter (-) |
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Customer Q&A
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This worked fine in bypassing my factory amp, no shortage of wire (had to trim 4' or so off of the harness during install), no problems with this at all!
Mike from Florence, OR