Metra 70-2021 Bypass Harness

Connect a new car stereo and bypass the factory amp in select 2000-01 Chevy Monte Carlo and Impala models

Item #: 120702021

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Metra 70-2021 Bypass Harness

The Metra 70-2021 harness enables you to install a new car stereo in your Impala or Monte Carlo. It uses a "jumper" to bypass the factory 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: 60 days.

Note: Most vehicles will require additional installation parts — please identify your vehicle if you haven’t done so, then check here for a list of parts. You can also call an Advisor for more information.

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  • Amp jumper wire harness

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Metra 70-2021 Bypass Harness Reviews

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Must have item

Written By Roy O., Wisconsin on Saturday, October 25, 2014

Wish I would have found this when I put the new radio in my car. The factory amp went out, so I had to cut and splice the input wires to the output wires. This would have saved me a ton of time, and would look a lot cleaner too.

Pros: Saves time, no cutting, you know the connections are correct

Cons: None

Not sure why this got sent to me.

Written By Bob W, Shrewsbury, MA on Tuesday, October 01, 2013

Crutchfield Customer Review (What's this?)

Not sure why I got this. As far as I can see, I didn't need this part. If I do need, I don't know where it goes because there are no directions.

Crutchfield response on Wednesday, October 02, 2013 We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

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