So i just got a 2000 chevy blazer. and i want to install an aftermarket deck.
i bought the adaptor kit from walmart and installed it. however...
After i clipped the plugs into the adaptor. there was one plug that there was no room for.
My cousin told me it goes to the amp???
Well.. My front speakers work but my rear speakers do not. and they worked when the Stock stereo was installed.

can anyone help me? what can i do to get everything working? and what can i do about that extra plug....

Thanks.

 

what color is the wire??? take a pic and post it up