I just bought a modified Z and was going over it this morning when it arrived at my mechanics for a check-up. Here is the issue, the lights that run in background of speedometer and center console gauges are not lighting up. The previous owner took out there aftermarket navi head unit and did not replace it with anything. Could they have blown a fuse when they took it out? Any other things that could be the reason? If it's a fuse which one would it be and where is it located?

Thanks for any help.

 

Is the a/c amplifier connected or any damage to the wiring? It's a white box under where the head unit would sit.