User Manual

White - Left Front Speaker Positive

Violet/Black - Right Rear Speaker Negative

Red - 12 Volts Switched Power

Violet - Right Rear Speaker Positive

Green - Left Rear Speaker Positive

Yellow - 12 Volts Constant Power

Gray - Right Front Speaker Positive

Gray/Black - Right Front Speaker Negative

Green/Black - Left Rear Speaker Negative

White/Black - Left Front Speaker Negative

Black - Chassis Ground (connect with Black wire of new receiver)

*Blue - Power Antenna or Amplifier Turn-On

120 70-1858

Revision 04/08/15

STEP 1 -- CONNECT WIRES

*120701858*

IMPORTANT

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.

Note: The Red and Yellow wires are reversed in 85-87 Somersets

and 86-89 Skylarks factory equipped with digital AM radios.

If your receiver does not have an illumination

wire, tape off the Orange wire.

Individually tape off any unused wires.

Receiver Wiring Adaptor

Orange - Illumination

*If the vehicle was equipped with factory OnStar, the Remote Wire

will be in Pin #29 on the separate 9-Pin plug (Pink Wire). The Amp

Remote Wire from the receiver must be spliced to this Pink Wire.

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.

Your receiver illumination wire could be Orange or Orange/White. As with other wires, match this wire to the illumination wire in this harness

by function, not by color. If your receiver does not have an illumination wire, tape off the illumination wire.

Individually tape off any unused wires.

Make final wiring connections following instructions on the next page.

PAGE 1
Receiver Wiring Adaptor 120 70-1858 IMPORTANT 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 04/08/15 STEP 1 -- 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.
PAGE 2
Receiver Wiring Adaptor Connections 120 70-1858 Page 2 STEP 2 -- CONTINUED STEP 2 -- CRIMP CONNECTIONS Tools & Parts Required Wire Stripper/Crimp Tool A. Strip wires back 1/2”. Crimp Caps D. Complete crimp connections for all necessary wires. Generic Illustration 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 Unused Wire (tape over bare wires) STEP 3 -- APPLICATION B.