Metra 70-2104

Wiring Harness for 2006-Up Chevrolet HHR Vehicles

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List price $29.99

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with warranty

Order within 64 hrs 58 mins to ship 7/24

Arrives by Thursday, July 27 to zip 20147

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Metra Audio Store

Product Features:

  • Wiring Harness for 2006-up Chevrolet HHR
  • Plugs into car harness
  • Power/4 Speaker
  • Will not retain OnStar or warning chimes
  • Accessory power not provided by this harness
  • 30-pin harness
  • Allows for the installation of an aftermarket radio using the existing factory wiring and connectors
  • No cutting of factory wiring needed
  • 1-year Manufacturer's warranty


  • Yellow – 12V Constant
  • Red – 12V Accessory
  • Black - Ground
  • Orange – Dash Light Dimmer/Illumination
  • Green – Left Rear Speaker (+)
  • Green with Black Stripe Left Rear Speaker (-)
  • White – Left Front Speaker (+)
  • White with Black Stripe – Left Front Speaker (-)
  • Purple – Right Rear Speaker (+)
  • Purple with Black Stripe – Right Rear Speaker (-)
  • Gray – Right Front Speaker (+)
  • Gray with Black Stripe – Right Front Speaker (-)

Harness Features

Vehicle Sound System
This refers to what kind of sound system the vehicle has. Premium audio systems are generally name brand systems (such as JBL, Bose, Rockford Fosgate, etc) that have been installed inside a vehicle when it leaves the factory. Often they more advanced systems, complex wiring, factory amplifiers, and other features that can make installing aftermarket component difficult.
Standard Sound
Main Harness Function
Different installations on different vehicles require different harnesses. This type is what the harness is considered. Each wiring harness we sell serves a purpose such as installing an aftermarket car stereo, integrating an aftermarket amplifier with your factory car stereo, connecting Bluetooth to your factory car stereo, and more.
Connect/Install an Aftermarket Car Stereo
Compatible Vehicle Make
Allows you to view only items that are compatible with your vehicle's make. Does not guarantee that it will work with your vehicle year or model.
Compatible Vehicle Make and Model
The model of vehicle that this vehicle specific product is designed for. Please keep in mind that engine variations can affect the compatibility of the products.
Chevy HHR

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
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1 Star

Average Attribution Rating



De aquellas!!

April 28, 2016

Compré este adaptador para mi 2007 chevy cobalt coupe,?aunque estaba posteado para ser usado en hhr quedó como guante además de exelente funcionamidnto y facil instalacion, con este vendedor encontre un super precio y envio gratis,

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Browse 3 questions and 6 answers
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Why did you choose this?
Sonic Electronix Store
Cuz it makes life much simpler and you guys were giving it away, I'm no fool!!!
Michael M on Nov 6, 2016
Item was bundled free with the purchase of my stereo.
Doretha E on Sep 3, 2016
need it for car
Arthur P on Sep 23, 2016
Where do I attach the red wire that comes with the Metra 70-2104 harness?
Daren G on Aug 6, 2015
Best Answer: I had to tap into one of the switched lines in the fuse block and run a line to the harness. It took me awhile to figure out that the original harness must be switching from a line not used. You could poke around in the original harness and maybe there is a switched line. It was just easier for me to run from fuse block to Metra harness. One warning, the harness does drain the battery after awhile if the car sits. It was on a van that was used no more than once every two months or so. If you are in the same situation, you may want to put in a trickle charger to the battery or a switched relay to the radio.
If you need anymore help, just e-mail me.
Reply · Report · will f on Aug 6, 2015
· Add Answer · I Have This Question Too (0)
with this harness can i still use my steering wheel controls?
tj g on Aug 27, 2016
· Add Answer · I Have This Question Too (0)

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Metra 70-2104