well I got a new cd plyer for my car.. 94 gt... and once I finished installing it, my speedometer doesn't work, digital clock didn't work, and the cd player didn't turn on, and door locks didn't work... I had no stereo previously... so I went to a stereo shop and got it looked at and they said it was the wrong harness it had so they put in the right one. Now my cd player works but not the speedometer, the clock or the door locks.... what do I do next other than to cry myself to sleep?

 

i would say start checking fuses and relays.

 

He's rught. Check the fuses.