Contact us
Close contact box

Metra 70-1786 Receiver Wiring Harness

Connect a new car stereo in select 1994-2008 Chrysler, Land Rover, Mercedes, and Saab vehicles

Item # 120701786

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

Read more from Crutchfield writer, Jo G.

Find what Fits your car

California customers:
Please click here for your Proposition 65 warning.

Ships today

In Stock
$16.99

About the Metra 70-1786 Receiver Wiring Harness

Metra 70-1786 Receiver Wiring Harness

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

Metra 70-1786 Receiver Wiring Harness

Installation Note: This harness uses your factory amplifier; your new stereo must have two pairs of preamp outputs to connect this 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 makes installing your new stereo easier, and allows you to put the factory radio back when you sell your vehicle or return it at the end of the lease. 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.

READ LESS

Customer reviews

Loading reviews...

Metra 70-1786 Receiver Wiring Harness Reviews

Average Customer Review(s):

Verified customer (What's this?)
Verified employee purchase (What's this?)

Pros:

Cons:

Crutchfield response

More details on the Metra 70-1786 Receiver Wiring Harness

Product Research

Features

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:

Wire Color Function
Red +12 Volt Accessory
Yellow +12 Volt Constant
Black Ground
Blue/White Amp Turn-On
Orange/White Dimmer
White RCA Left Front Channel
Gray RCA Right Front Channel
Green RCA Left Rear Channel
Violet RCA Right Rear Channel

Factory Amp Note: This harness includes RCA connections (instead of speaker wire leads) to connect the aftermarket head unit's preamp outputs to your vehicle's factory amp. Your aftermarket head unit must be equipped with front & rear preamp outputs.

The Crutchfield Car Selector: Please visit the Crutchfield Car Selector for your specific type of vehicle.

Loading accessories...

Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
fits my car [ Donald  Mar 08, 2019 ]
A
Easy install [ Harold  Mar 06, 2019 ]
A
For a clean install [ EUGENE  Feb 10, 2019 ]
A
Needed for installation to allow the bose amplifier to work with aftermarket unit. [ Browne  Dec 11, 2018 ]
A
Gift [ Lisa  Dec 10, 2018 ]
A
this was realy needed and it was free [ DEREK  Nov 21, 2018 ]
A
so you don't have to cut the original wiring. [ WALTER  Oct 19, 2018 ]
A
NEED IT [ DOUGLAS  Oct 01, 2018 ]
A
Cause it fits my car [ keith  Sep 28, 2018 ]
A
Makes installation simple [ Randy  Aug 26, 2018 ]
A
Adam recommended it [ Curtis  May 09, 2018 ]
A
Make the job easier [ Elizabeth  Feb 01, 2018 ]
A
Needed equipment to complete installation. [ KEVIN  Jan 12, 2018 ]
A
Because it was recommended for this installation. [ Duane  Nov 27, 2017 ]
A
I needed a receiver wiring harness because I didn't want to hack the factory wiring. [ Michael Wayne  Nov 25, 2017 ]
A
required to use existing amp and subwoofer in vehicle. [ Chris  Nov 21, 2017 ]
A
Crutchfield recommended it. [ Bradley  Nov 18, 2017 ]
A
Supplied with installation kit. Best way to connect aftermarket head unit to factory wiring harness without cutting wires. I've used these type of connectors many times without problems. I suggest taking the time to use solder and heat shrink wrap to insure the best possible connection. [ James  Nov 05, 2017 ]
A
Part of installation bundle [ GREGG  Oct 26, 2017 ]
A
NEEDED IT [ MELVIN  Sep 19, 2017 ]
A
Been using Crutchfield for 30 years, even for the 12 years I had a professional audio installation shop. If they say this is a good idea, go ahead and get it. [ Domingo  Sep 12, 2017 ]
A
Recommended [ Barbara  Sep 05, 2017 ]
A
Installing a radio [ Amberley  Sep 04, 2017 ]
A
part of the install kit [ Thomas  Aug 20, 2017 ]
A
To radio system in my car [ Jeffrey  Jul 13, 2017 ]
A
To ensure that the factory wiring was compatible with the head unit. [ Wendell  Apr 16, 2017 ]
A
recomended [ G  Feb 15, 2017 ]
A
said i needed it [ JOHN  Dec 30, 2016 ]
A
recommended [ Eugene  Nov 30, 2016 ]
A
Just makes life easier so I can solder the radio wires to the harness on my bench in the garage and then hook everything up quickly in the car. [ Big Daddy Dave  Oct 15, 2016 ]
A
Suggested for my car [ Tony  Oct 05, 2016 ]
A
Fixing the installation of my radio (done by a chain store). [ Jeffrey Jay  Sep 17, 2016 ]
A
To install a previous Crutchfield purchase into a different vehicle [ Ken  Sep 03, 2016 ]
A
Needed for the install [ B  Aug 25, 2016 ]
A
because mine 70-1784 doesn't work with my bose and i stated that when i bought now im stuck with it i guess [ EDMOND  Jul 29, 2016 ]
A
Needed item to install new radio [ John  Jul 26, 2016 ]
A
Required to retain use of factory Bose system [ Roderick  Jul 17, 2016 ]
A
Must have to connect to existing harness. [ Itay  Jun 02, 2016 ]
A
Needed for installation. [ Tristan  Jun 01, 2016 ]
A
no cutting original wires [ Rafael  May 05, 2016 ]
A
So i will not cut any wires on my vehicle [ HERIBERTO  Apr 21, 2016 ]
A
only place that had it [ ROBERT A  Apr 01, 2016 ]
A
Install in Mercedes Benz [ Graham F.  Mar 13, 2016 ]
A
I needed an adapter and the price was reasonable for a name brand product. [ James  Feb 11, 2016 ]
A
To keep from damaging factory harness incase I reinstall original unit [ Michael  Dec 19, 2015 ]
A
Made wiring connections quick and easy [ Andrew  Dec 05, 2015 ]
SHOW MORESHOW LESS

2 questions already asked

Q
do you have a specific diagram show how to properly connect my Kenwood KDC-X599 to a Metra 70-1786 adapter?
[ Craig  Jul 02, 2016 ]
1 answer
A
Yes the harness kit came with a wiring diagram so you could easily connect the cortect wires together. I had no problem doing/ following the diagram
[ Gabriel  Jul 03, 2016 ]
Q
This harness has a two-row block with 8 pins and another for 5 pins. That all fits perfectly, but I also have a separate, thinner but longer block that was in the stock radio, and now has nowhere to go... Car is 1997 Mercedes S320 with a Becker stock radio.any ideas?
[ David  Dec 03, 2014 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/.
[ Jeff  Dec 03, 2014 ]  Staff

Loading articles...

TOP