I am trying to install a 2000 Montana van radio into my 88 Fiero. I finally located two harness adapters that will connect the two. The old plug was left in the radio with cut off wires. (Too short to use) The problem is, the wire colors don't match the ones in the new plug, and after hours of searching, I have not found a wiring diagram that matches the original either. This is a 24 pin connecter with 4 positions not used. Does anyone know which colors or positions are for which functions? Speaker connections are pretty obvious. Thanks for any help.

2000 Pontiac Montana Car Audio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 5 1/4″ Speakers
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: 5 1/4″ Speakers
Car Audio Rear Speakers Location: Rear Hatch
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Thanks. Problem is, I have only one gray wire, two orange wires, a pink, brown/white, two black/white, one yellow, and one gray/black. Must be some alternate colors. The speaker wires appear to be the same. Thanks.

This may help. I have another diagram for a premium stereo just let me know.



-Mitch

How will the Montana radio in a Fiero get past the class 2 data signal requirement?

We all want to know this minor detail.

P

try this site, might have the info needed

http://www.installdr.com/