Connections To Be Made; For Models Without An Amplifier - Metra 99-3018 Instrucciones De Instalación

Attention! This interface will work with models that are either non-amplified, analog
amplified, or digital amplified. Please follow the instructions carefully for your model
vehicle. Failure to do so will result in either no sound, or low sound. If you are unsure
if your vehicle is factory amplified or not, please contact your local dealership.

For models without an amplifier:

From the 16-pin harness with stripped leads to the aftermarket radio:
• Connect the Red wire to the accessory wire.
• If the aftermarket radio has an illumination wire, connect the Orange/White
wire to it.
• If the aftermarket radio has a mute wire, connect the Brown wire to it. If the
mute wire is not connected, the radio will turn off when OnStar is activated.
• Connect the Gray wire to the right front positive speaker output.
• Connect the Gray/Black wire to the right front negative speaker output.
• Connect the White wire to the left front positive speaker output.
• Connect the White/Black wire to the left front negative speaker output.
• Tape off and disregard the following (5) wires, they will not be used in this
application: Blue/White, Green, Green/Black, Purple, Purple/Black.
99-3018

Connections to be made

The following (3) wires are for multimedia/navigation radios that require these wires.
• Connect the Blue/Pink wire to the VSS/speed sense wire (if applicable).
• Connect the Green/Purple wire to the reverse wire (if applicable).
• Connect the Light Green wire to the parking brake wire (if applicable).
From the 3018 harness to the aftermarket radio:
• Connect the Black wire to the ground wire.
• Connect the Yellow wire to the battery wire.
• The Black/Yellow wire is used for OnStar level adjustment for models that
do not come equipped with steering wheel controls. Refer to the OnStar level
Adjustment section for further instructions.
• Connect the Red and White RCA jacks to the audio AUX-IN jacks of the aftermarket radio
• Leave connected the (2) 4-pin connectors that have Gray, Gray/Black, White,
and White/Black wires.
• Cut the resistors off from the Green, Green/Black, Purple, Purple/Black wires
right below the heat shrink.
• Connect the Green wire to the left rear positive speaker output.
• Connect the Green/Black wire to the left rear negative speaker output.
• Connect the Purple wire to the right rear positive speaker output.
• Connect the Purple/Black wire to the right rear negative speaker output.
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