I have a 90 maxima and just about 6 months ago both the alarm and keypads stopped working at the same time. All the fuses that I checked are good. Is there any way I could fix this because I would really like my alarm back. Also it happened around the time I installed my stereo. The buttons don't even beep or light up any more. If there is someone that could help me I would really appreciate it.

 

my keypads are the same....so I installed keyless entry & commmand start