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Metra Electronics 99-3010S - Connections to be Made; For models without an amplifier

Metra Electronics 99-3010S
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REV. 5/25/2018 INST99-3010S
7
CONNECTIONS TO BE MADE
Connect the Green/Purple wire to the reverse wire.
Connect the Light Green wire to the parking brake wire.
Tape off and disregard the following (5) wires, they will not be used in this application:
Blue/White, Purple, Purple/Black, Green, Green/Black
From the 3010 harness to the aftermarket radio:
Connect the Black wire to the ground wire.
Connect the Yellow wire to the battery wire.
If installing either an ASWC-1 or AX-LCD (both sold separately), connect the (2) Red wires
to accessory power.
Cut off and remove the resistors from the Green, Green/Black, Purple, and Purple/Black
wires 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.
Ensure the (2) 4-pin Molex connectors are connected together.
Note: The 4-pin to 4-pin resistor pad harness
will not
be used in this application.
Continued on the next page
Attention! This interface will work with models that are either non-amplified or 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.
Note: If installing either an ASWC-1 or AX-LCD (both sold separately), connect the (2) Red
wires from the 3010 harness as well.
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.
The following (3) wires are only for multimedia/navigation radios that require these wires.
Connect the Blue/Pink wire to the VSS/speed sense wire.

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