okay i have been looking at the threads from installuni and i cant get mine to work still its a iequus tach but my question is i hooked up everthing to my radio wires (ground,ilumination and red to amp remote, and green to #10 white wire on pcm. could it be im not getting 12v + or neg going to the radio?

 

Make sure your tach is set on 4 cyl mode and what year is your car? 98s have a different pin out for the tach. Someone may chime in, but I would guess that the amp remote is not a constant hot. Try another power source and see it that's it. The remote turn on should just send a signal to turn on and that's it.

 

yeah it was my remote not enough voltage i read some of your post though in other threads got it working with the help of camaro01ss4life working great