Skip to main content
Chat
Photo of Expert Advisor Cam
Contact us

Expert help from our Advisors

What is an expert Advisor?
Connect ID #
985 902 205 5
Connect ID #
985 902 205 5
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  
Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

Thank you. We will be calling you .
We're sorry. We have encountered a problem.

Metra 70-6510 Amp Bypass Harness Connect a new car stereo and bypass the factory amp in select 2004-05 Dodge Ram trucks with Infinity

Item # 120706510

The Metra 70-6510 harness enables you to install a new car stereo in your Ram truck.

Find what Fits your vehicle

Remove

Checking fit...

The Metra 70-6510 harness enables you to install a new car stereo in your Ram truck.

Item # 120706510

Ships free today

Every order includes

  • Free lifetime tech support
  • 60-day price-drop protection
  • 60-day returns
In stock
$59.99

Get questions answered fast & free

Expert help 400+ hours training Virginia-based

About the Metra 70-6510 Amp Bypass Harness

What's in the box:

Other info:
  • MFR # 70-6510
  • Item # 120706510
  • California customers: Please click here for your Proposition 65 WARNING.

More details on the Metra 70-6510 Amp Bypass Harness

Stacey B.

Product Research

Features

Compatibility: The Metra 70-6510 is an amplifier bypass harness for 2004-2005 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.

  • 2004 Dodge Ram SRT-10 with hands-free and Infinity sound system (must have a telephone symbol on the mirror)
  • 2004 Dodge Ram (non SRT-10) with Infinity sound system
  • 2005 ALL Dodge Rams with Infinity sound system

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 (-)

Loading accessories...

Customer Q&A

6 questions already asked

Q
I have a 2005 dodge ram with the 7 speaker system and I have a module that turns on the factory amp but I'm sick of the front door speakers just playing bass. Does this harness fix that problem? Or is there a way I can wire what I currently have to make it so the front speakers don't play just bass. And if I have to purchase this to get the front ones to work are the steering wheel controls still retainable with my access module?
hunter  May 30, 2025
1 answer
A
Greetings Hunter. Thank you for your question. This Bypass harness is used only when you are replacing the factory radio with an aftermarket stereo. If you will, or already have replaced that radio, then using the bypass harness will use the new stereos built in amplifier, and you will have full range going to both the 6x9 doors, as well as the dash speakers. What you would also need for the dash speakers then are bass blockers, or the low frequencies from the new stereo would damage those dash speakers. www.crutchfield.com/p_007BB5000/item.html You are more than welcome to call one of our advisors at 800-324-9695 to discuss your project.
thomas  May 30, 2025 (Staff)
Q
Will this work to allow the steering wheel volume control to work with an aftermarket stereo?
kayla  Jan 11, 2023
1 answer
A
This is not a steering wheel control interface. Please reach out to our advisors for help with selecting the correct interfaces/harnesses for your vehicle. You may reach us via online chat or phone at 1-800-324-9695.
zachary  Jan 12, 2023 (Staff)
Q
In the reviews a person said this didnâ??t fit the 05 dodge 1500 Daytona model. Do you know what harness is supposed to work? 7 speakers without handsfree calling
r  Mar 06, 2022
1 answer
A
For additional 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 work and what you will need for an installation in your vehicle.
kenneth  Mar 07, 2022 (Staff)
Q
Im looking for a harness for aftermarket radio to work with the factory amp an infinity system in a 05 srt10?
danny  Jul 13, 2021
1 answer
A
Unfortunately we don't carry a harness that retains the factory amplifier in a 2005 Dodge SRT-10.
allison  Jul 17, 2021 (Staff)
Q
2005 dodge 1500 infinity system (7) speakers. will this allow me to use the 3 speakers in the dash as well or will I lose that ability?
dan  Jan 05, 2021
1 answer
A
You should have all the speakers working. You may want to wire the dash speakers with the rear speaker. The front door speakers are subs.
jeff  Jan 05, 2021
Q
I have a 2004.5 dodge 2500 is this the harness I need? Will I need to replace the door speakers and will the dash speakers still work?
devin  Jan 18, 2020
2 answers
A
Yes, I believe so. Our truck is a weird year with 05 wiring and electronics and mostly 04 mechanical parts. It did bypass the factory amp and I didn't need to replace the speakers but did anyways. You can also order the kit to work with steering wheel stereo controls as well. That was a little tricky to install but not to bad.
bret  Jan 19, 2020
A
I purchased this same harness for the identical truck and it performed as advertised. My truck has the Infinity stereo factory upgrade and all of the speakers worked after the swap. The sound was much superior also. The installation was kind of a pain due to the limited space behind the dash on the passenger side, but it all worked out.
barry  Jan 19, 2020
SHOW MORESHOW LESS

Loading articles...

Compare the sound