Metra

70-1785 - Uncategorized Metra - Free user manual and instructions

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USER MANUAL 70-1785 Metra

Receiver Wiring Adaptor

IMPORTANT

120 70-1785

Before starting, compare items on your invoice with items received. Thoroughly check packing materials. If an item is missing, please call Crutchfield at 1-888-955-6000.

Revision 05/12/20

STEP 1 -- MATCH & CONNECT WIRES

A. Match wires below to the matching function of each wire on your receiver (refer to instructions supplied with receiver). The wire colors of your new receiver may, or may not, match the wire colors of the adaptor. Match adaptor and receiver wires by function, disregarding color.
B. Individually tape off any unused wires.
C. Make final wiring connections following instructions on page 3.

READ FIRST

Please see the vehicle application chart on page 2 before making ANY wiring connections.

Blue - Audi (not used) Blue - Porsche Antenna Turn-On Blue - Volkswagen Antenna Turn-On Violet/Black - Right Rear Speaker Negative Violet - Right Rear Speaker Positive Gray/Black - Right Front Speaker Negative Gray - Right Front Speaker Positive White - Left Front Speaker Positive White/Black - Left Front Speaker Negative Green - Left Rear Speaker Positive Green/Black - Left Rear Speaker Negative Blue/White - Audi Amplifier Turn-On Blue/White - Volkswagen Amplifier Turn-On Red - 12 Volts Switched Power Orange/White - Illumination Black - Chassis Ground Yellow - 12 Volts Constant Power Functions of the Red and Yellow wires are reversed in Porsche vehicles. Some vehicles don't have 12V Switched Power. See the note on page 2 for more details. White - Left Front Channel Gray - Right Front Channel Green - Left Rear Channel Violet - Right Rear Channel Connect to RCA preamp outputs of new receiver. *120701785* CRUTCHFIELD® Copyright 2020 Crutchfield Corporation

CRUTCHFIELD

Copyright 2020 Crutchfield Corporation

STEP 1 -- MATCH & CONNECT WIRES (continued)

Vehicle Applications

1988-'89 Volkswagen Golf, GTI and Jetta

Connections:

  • White, White/Black, Gray and Gray/Black wires to the Front speaker wires of the receiver.
  • Green, Green/Black, Violet and Violet/Black wires to the Rear speaker wires of the receiver.
  • White and Gray RCAs to the Front RCA outputs of the receiver.
    • The Green and Violet RCAs are not used.

1988-'92 Audi 80

1988-'95 Audi 90

1989-'94 Audi 100 w/o Bose

1989-'94 Audi 200 w/o Bose

Connections:

  • White, White/Black, Gray and Gray/Black wires to the Front speaker wires of the receiver.
  • Green and Violet RCAs to the Rear RCA outputs of the receiver.
  • Green, Green/Black, Violet and Violet/Black wires are not used. Tape them off individually with electrical tape.
  • White and Gray RCAs are not used.

1990-'94 Audi V8 Quattro

1989-'94 Audi 100 with Bose

1989-'94 Audi 200 with Bose

1990-'93 Volkswagen Cabriolet and Corrado

1990-'92 Volkswagen Golf, GTI, Jetta and Passat

1993-'95 Porsche 911

Connections:

  • White and Gray RCAs to the Front RCA outputs of the receiver.
  • Green and Violet RCAs to the Rear RCA outputs of the receiver.
  • None of the wires labeled for speakers will be used. Tape them off individually with electrical tape.

NOTE:

Some vehicles don't have 12 Volts Switched Power in the vehicle. The installer will need to connect the receiver's switched power lead to a 12V switched power source in the fuse box.

List of Vehicles without 12V switched power:

1990 and older Volkswagen Golf, GTI

Early 1992 and older Volkswagen Jetta

1990 Volkswagen Passat

1991 and older Audi 80, 90, 100, 200

All Audi V8

Receiver Wiring Adaptor Connections

120 70-1785

STEP 2 -- CRIMP CONNECTIONS

Tools & Parts Required ▶

Wire Stripper/Crimp Tool Crimp Caps

Metra 70-1785 - Tools & Parts Required ▶ - 1

Metra 70-1785 - Tools & Parts Required ▶ - 2

A. Strip wires back 1/2".

Metra 70-1785 - Tools & Parts Required ▶ - 3

Metra 70-1785 - Tools & Parts Required ▶ - 4

natural_image Line drawing of a mechanical component with internal gear-like structure and base, no text or symbols present

B. Twist wires together and insert in crimp cap.

Metra 70-1785 - Tools & Parts Required ▶ - 5

natural_image Diagram showing a cable being inserted into a plug, with an arrow indicating the process (no text or symbols present)

C. Squeeze middle of cap for tight connection.

middle of cap section.

STEP 2 -- CONTINUED

D. Complete crimp connections for all necessary wires.
E. Be sure to wrap any wires from the Wiring Adaptor that are not necessary (wires with no match from the new receiver) with electrical tape.

Receiver Wiring Adaptor

Generic Illustration

Unused Wire (tape over bare wires)

STEP 3 -- APPLICATION

When ready to install the receiver, plug the Wiring Adaptor from the new receiver or receiver assembly into the factory radio harness(es) in the vehicle dash.

to install the receiver, plug aptor from the new receiver sembly into the factory (es) in the vehicle dash.

Generic Illustration

CRUTCHFIELD®

Copyright 2020 Crutchfield Corporation

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Product information

Brand : Metra

Model : 70-1785

Category : Uncategorized