91 Burb Stereo

[SIERRA666]

I am replacing my factory tapedeck in my 91 Burb.
There are 4 plugs on the back, 1 is for rear left/right speakers, 2 is for front left/right speakers, 3 is for 12+ ground and light, The 4th plug is the problem it has 2 wires one is orange the other is black (I Think). The first three are right next to each other but the fourth is on the opposite side, just wondering what they are for so i know where to hook them up? Thanks /forums/images/graemlins/confused.gif /forums/images/graemlins/grin.gif

 

[Dale fan]

Orange should be the constant 12v I believe. Just go to Wal-mart or Bestbuy and get you a wiring harness adaptor for $5-$10. Makes life a whole lot easier. You will need the 88 and older plug for your /forums/images/graemlins/burb.gif. They kept the older plug while the IFS switched to the newer ones.