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Metra 70-1786

Amplifier Integration Harness for Select 1991-2004 Mercedes Benz and Land Rover Vehicles

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List price $29.99

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$10.99

with warranty

Order within 20 hrs 9 mins to ship 12/7

Arrives by Wednesday, Dec. 14 to zip 94107

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Metra Audio Store
Product Features:
  • Factory amplifier integration harness plugs in behind the radio to retain the factory amplifier
  • Set-up at low level inputs using the RCA Outputs from the aftermarket radio
  • 4 RCA Plugs that plug to the aftermarket radio's pre-amp outputs
  • Allows for the installation of an aftermarket radio using the existing factory wiring and connectors
  • No cutting of factory wiring needed
  • Compatible with 1999-2004 Land Rover Discovery and 1991-1999 Mercedes Benz vehicles
  • Authorized Internet Dealer
  • 1-year Manufacturer’s warranty
Connections:
  • Yellow – 12V Constant
  • Red – 12V Accessory
  • Black - Ground
  • Orange – Dash Light Dimmer/Illumination
  • Blue with White Stripe - Amp Turn-on

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.
Premium 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.
Install a Car Stereo & Bypass the Factory OEM Amplifier
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.
Land Rover
Mercedes-Benz
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.
Land Rover Freelander
Mercedes Benz C Class
Mercedes Benz E Class

Warranty and Return Policy

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

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
64%
4 Star
36%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.7
Features
4.6
Design
4.5
Usability
4.3
Dan l

Jupiter, FL

Overall
Durability
Value
Features
Design
Usability
great wiring harness

September 28, 2014

This worked perfect for my girlfriends 2001 mercedes e320 Installed a new headunit in 30 min must have radio attena adapter also

15 of 17 found this helpful

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Chuck

East Orange, Nj

Overall
Durability
Value
Features
Design
Usability
Great product

June 1, 2011

Very easy to use, very durable product. Great price and even greater quality.

16 of 19 found this helpful

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holly

st. louis

Overall
Durability
Value
Features
Design
Usability
2001 SLK 320

July 2, 2014

This will work but you need to cut the RCA gray and white, separate them and wire directly to the head unit wiring.

15 of 18 found this helpful

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Stephen

Collierville, TN

Overall
Durability
Value
Features
Design
Usability
Perfect for Mercedes E320 2001

January 22, 2012

First glance and I thought "oh no this has been wired wrong". However that is not the case and it works perfectly with my E320 and Jensen VM9314.
Note to E320 owners. You need to tap into the black/yellow wire (switched power) from the cigarette lighter as Mercedes does not have it in their stock harness. Just remove wood panel surrounding the gear shift. Remove two screws holding ashtray. Put shift in reverse so you have room to pull out complete ashtray assembly. Then just unplug the power harness from the cig lighter and you have clear access to the wiring. Quite simple, really. Do this first and you have lots more room for radio installation also. The RCA-style speaker connecters totally make the wiring process simple. Go to posi-lock website for easiest connectors you will ever use. Sonic shipped all my gear in less than two days of ordering. Thanks Sonic!

14 of 16 found this helpful

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RG

Waxhaw, NC

Overall
Durability
Value
Features
Design
Usability
Good Product

June 22, 2011

This product made the install of my aftermarket cd player very easy and neat.

14 of 17 found this helpful

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JCB

SCRANTON,PA.

Overall
Durability
Value
Features
Design
Usability
EXCELLENT PRODUCT

August 11, 2009

I PURCHASED THIS CD PLAYER/RADIO/IPOD PLAYER FOR MY
2ND CAR WHICH IS USED BY MY GRANDSON. THIS PLAYER IS THE BEST SOUNDING PLAYER I HAVE HEARD IN A CAR.

14 of 17 found this helpful

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Will

St. Louis, MO

Overall
Durability
Value
Features
Design
Usability
Metra 70-1786 for a 2006 Chrysler Crossfire w/ Infinity factory amp!

February 24, 2014

Product worked great. It is a must have if you are doing a replacement of the factory radio that has an Infinity stereo system with an amplifier with an aftermarket radio. Was an easy swap!

14 of 18 found this helpful

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Dadaism

San Antonio, tx

Overall
Durability
Value
Features
Design
Usability
Aftermarket radio installation

July 22, 2011

I purchased this wiring harness to connect the aftermarket radio RCAs to the factory car amplifier. Works great though the plug is a bit tight.

14 of 18 found this helpful

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Ray

Auburn, WA

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
required interface for European cars

August 3, 2015

works as intended and makes installation of the new receiver seamless.
Not cutting of wires is needed so installation is straight forward.

8 of 10 found this helpful

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Mr.Trent

GRAHAM, NC

Overall
Durability
Value
Features
Design
Usability
Car Audio Installs !

November 14, 2016

Great device and time saver and a more professional job. A must have if you want great results ! Never do a install without these type of devices.

0 of 0 found this helpful

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David

Casper, WY

Overall
Durability
Value
Features
Design
Usability
Radio harness

August 23, 2016

The hook up worked like it should. Instructions were a bit vague, so it held up the installation. The main thing it that I have radio that is awesome and the harness saved me from cutting and splicing wires.

0 of 0 found this helpful

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Browse 1 question and 4 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
just like it
francis f on Jul 4, 2016
combo deal with JVC receiver was an attractive offer
Anthony T on Jan 20, 2015
free
Sheila M on Nov 1, 2015
I need to change the harness in my car in order to use the factory amp.
Michael U on Nov 8, 2014

Product Summary

Manufacturer

Model Number

70-1786

UPC

086429108442

Weight

0.25lbs

Internal SKU

met-701786

Internal Product ID

12518

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 70-1786