Crutchfield 120 70-1770 Manual Download Page 1

Receiver Wiring Adaptor

120 70-1770

Revision 04/16/14

Red 

12 Volts Switched Power

Yellow 

12 Volts Constant Power

Black - Chassis Ground

Blue 

Power Antenna

STEP 1 -- CONNECT WIRES

Connect 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.

If your receiver does not have a Dimmer or Illumination wire, tape off the Orange/White or Orange wire of this adaptor (the one not used).

If there is no Ground wire in the factory harness, connect new receiver’s Ground wire to vehicle chassis. 

Individually tape off any unused wires.

Make final connections following instructions on page 3.

Power Plug of Harness Set

(see speaker plug instructions on page 2)

*120701770*

Orange - Illumination

Copyright 2014  Crutchfield Corporation

Before starting, compare items on your invoice with items 
received.  Carefully check through packaging material.  If an 
item is missing, please call 

Crutchfield at 1-888-955-6000.

IMPORTANT

A.

B.

C.

D.

E.

Orange/White - Dimmer

Blue/White 

Amplifier Turn-On

Orange/Black - (not used, tape off)

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