I was relpacing my firewall pad, and i found a plug up by where the radio would be. since the car had no radio in it when i got it , it might be for that.
it's flat with one lt. green wire, one lt.green with black stripe,and one yellow wire. i checked my assmb. manual could not find that combo.
any help thanks!

What year Camaro is this?

The wiring info for my aunt's 89 Camaro is:
--edit link bad---

Info:
Constant 12V+ - Orange
Switched 12V+ - Yellow
Ground - Black
Illumination - Gray
Dimmer - Brown
Antenna Trigger - Pink
Antenna - Right Front
Front Speakers - 4" x 6" Dash
Left Front (+) - Tan
Left Front (-) - Gray
Right Front (+) - Light Green
Right Front (-) - Dark Green
Rear Speakers - 6" x 9" Side Panels
Left Rear (+) - Brown
Left Rear (-) - Yellow
Right Rear (+) - Dark Blue
Right Rear (-) - Light Blue

Riccbhard, it's a 68

What year Camaro is this?

The wiring info for my aunt's 89 Camaro is:
--edit link bad---

Info:
Constant 12V+ - Orange
Switched 12V+ - Yellow
Ground - Black
Illumination - Gray
Dimmer - Brown
Antenna Trigger - Pink
Antenna - Right Front
Front Speakers - 4" x 6" Dash
Left Front (+) - Tan
Left Front (-) - Gray
Right Front (+) - Light Green
Right Front (-) - Dark Green
Rear Speakers - 6" x 9" Side Panels
Left Rear (+) - Brown
Left Rear (-) - Yellow
Right Rear (+) - Dark Blue
Right Rear (-) - Light Blue

That jives pretty well with my '68. My original speaker and wires were long gone, but the radio power is yellow.

Thanks, to both of you! a cd player is going in anyway, but i wanted to know!

Your welcome! :)

It seems like the speaker wire and power wire colors are the same on most GMs. My aunt's Blazer is the same with the speaker wire colors. It's a 98. :clonk:

It is the factory power and speaker plug. This post should help you (there are pics).

http://www.camaros.net/forums/showthread.php?t=62311