Metra 99-7803G User Manual

•  Connect the 

Red wire to the ignition 

wire of the aftermarket radio.

•  Connect the 

Yellow wire to the 

radio’s 12-volt battery or  

memory wire.

•  Connect the 

Black wire to the 

radio’s ground wire.

•  Connect the 

Blue wire to the 

antenna turn on wire of the 

aftermarket radio.

•  Connect the 

Orange wire to the 

illumination wire of the aftermarket 

radio. If the aftermarket radio has 

no illumination wire just tape off the 

Orange/White wire.

•  Connect the 

White wire to the left 

front positive speaker output of the 

aftermarket radio

•  Connect the 

White/Black wire 

to the left front negative speaker 

output of the aftermarket radio.

•  Connect the 

Gray wire to the right 

front positive speaker output of the 

aftermarket radio

•  Connect the 

Gray/Black wire to the 

right front negative speaker output 

of the aftermarket radio.

•  Connect the 

Green wire to the 

radio’s left rear positive  

speaker output.

•  Connect the 

Green/Black wire 

to the radio’s left rear negative 

speaker output.

•  Connect the 

Purple wire to the 

radio’s right rear positive  

speaker output.

•  Connect the 

Purple/Black wire 

to the radio’s right rear negative 

speaker output.

This 12-pin harness is to be used in 

conjunction with the ASWC (not included).

Please refer to ASWC instructions for 

programming. The ASWC is to retain  

the factory steering wheel controls  

if equipped.  

Plug the 6-pin side into the 99-7803 and 

the 20-pin into the vehicle radio harness.  

The micro B USB connection is for 

future software updates to this if 

necessary. See 

axxessinterface.com  

for updating information.