On my 91 camaro the speedo tach and fuel gauge never worked. But all the rest did. I pulled the AC and smog off for the turbo but some things came up and so I put it all back together so I could drive it and I was having some problems with it missing and then realized I forgot to hook the ground from the back of the block to the engine back up after that the engine runs perfect but I just realized the gauges don't work and if I turn the headlights on the door alarm goes off even if the door is closed

 

Figured it out blown fuse