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Metra 70-1398 Receiver Wiring Harness

Connect a new car stereo in select 1981-92 Toyota and Daihatsu vehicles

8 Reviews

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Item # 120701398

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This vehicle-specific wiring harness makes connections between your new car stereo and your car's electrical system.

Metra 70-1398 Receiver Wiring Harness

This vehicle-specific wiring harness makes connections between your new car stereo and your car's electrical system.

First, attach the color-coded wires on your Crutchfield-supplied harness to the wires from your new stereo. If you're not using a soldering iron, we recommend that you purchase some wire connectors to secure the connections. Check out our handy article on three ways to connect the wiring harness here.

Now, once this harness is connected to your new stereo, you'll be able to plug right into your car's factory radio connector. This harness saves installation time since you won't have to cut factory wires individually, and this also enables you to re-install the factory radio if needed. A detailed instruction sheet comes with the harness. Warranty: 60 days.

Please read this important note: This harness may not contain provisions for every wire needed to complete your installation, and it will not accommodate special navigation, video, or factory steering wheel control connections. You will need a special adapter if you want your factory steering wheel audio controls to work with your new stereo.


Note: The 12V constant power lead may not be present in some 1982-84 Toyota models. If not present, and your receiver requires a constant 12V memory lead (most do), run a wire directly to the battery or an appropriate un-switched fuse.

  • 12V constant power
  • 12V switched power
  • chassis ground
  • power antenna turn-on
  • dimmer
  • left front speaker +/-
  • right front speaker +/-
  • left rear speaker +/-
  • right rear speaker +/-

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.

Perfect fit and correct color code

Michael, Jarrettsville, MD

What's in the Box:

  • 7.5" Power/front speaker harness
  • 7.5" Rear speaker harness

Metra 70-1398 Receiver Wiring Harness Reviews

Average Customer Review(s):

(8 Reviews)

Metra 70-1398 Receiver Wiring Harness

Michael from Jarrettsville, MD on 4/14/2017

2002 Toyota 4Runner
Crutchfield Customer Review (What's this?)

Perfect fit and correct color code

Pros: Exact fit for the vehicle

Cons: None

Worked great

William The Cat from California on 12/27/2015

1985 Toyota Pickup
Crutchfield Customer Review (What's this?)

made things very easy to wire up and understand



great adapter

Dale from North Carolina on 11/11/2015

1985 Toyota Pickup
Crutchfield Customer Review (What's this?)

great connection drawings, really made for a clean installation.



Metra 70-1398 Receiver Wiring Harness

MikeZ from Connecticut on 9/18/2015

1985 Toyota Celica
Crutchfield Customer Review (What's this?)

Great for when the previous owner decides that you won't be needing your original speaker wiring

Pros: Good value


Toyota/Daihatsu Receiver Wire Harness

Bruce F. from Barnardsville, NC on 12/18/2013

1981 Toyota Cressida
Crutchfield Customer Review (What's this?)

Perfect fit and easy to follow instructions.



Metra 70-1398 Receiver Wiring Harness

Anonymous from Broomfield on 6/22/2013

Crutchfield Customer Review (What's this?)

The wiring harness made installation a snap! Instructions were clear and accurate.




pat from mt on 3/7/2013

Crutchfield Customer Review (What's this?)

worked great was color coded. snapped rigth into place. made things very simple



Metra 70-1398 Receiver Wiring Harness

C from Colonial Beach, Va. on 1/18/2013

1985 Toyota Supra
Crutchfield Customer Review (What's this?)

Exact match with factory wire connection.

Pros: Work fine with new radio

Cons: none


Hands-on research

Product Research


Crutchfield Wiring Harness: Crutchfield wiring harnesses prevent 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 Crutchfield 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 Crutchfield 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 Crutchfield 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:

(Switched Power/Front Speaker Harness)

Wire ColorFunction
Red+12 Volt Accessory
BlackChassis Ground
BluePower Antenna
WhiteLeft Front Speaker +
White/BlackLeft Front Speaker -
GrayRight Front Speaker +
Gray/BlackRight Front Speaker -

(Constant Power/Rear Speaker Harness)

Wire ColorFunction
Yellow+12 Volt Constant
GreenLeft Rear Speaker +
Green/BlackLeft Rear Speaker -
VioletRight Rear Speaker +
Violet/BlackRight Rear Speaker -

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

hopefully it will make the installation of my new stereo painless[ Larry  Sep 01, 2017 ]
free.99[ Dylan  May 16, 2017 ]
To help facilitate a trouble-free installation.[ Michael  Feb 10, 2017 ]
Ease of install[ Joseph  Dec 27, 2016 ]
Ease of wiring[ SaDonna Brooke  Dec 09, 2016 ]
Great cite, ease of ordering[ Lawrence  Nov 21, 2016 ]
I've been ordering from Crutchfield for quite a while and never been disappointed. Good quality products ![ Nicholas  Jun 09, 2016 ]
I followed the suggestions on the website.[ Jo  Mar 16, 2016 ]

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