The backlight on the gauge cluster that illuminates the speed and RPM and literally everything is not working at most parts of my cluster. It works in random places like a bit of the RPM range and SPEED range and half the Fuel Gauge. So how would I go about replacing the lights or is there a fuse that I should check before?

 

Most likely there is a problem with your cluster. The cluster is relatively easy to remove. There are instructions in this thread. I do not think it is a fuse problem or a few of your LED's failed. More likely some kind of connection issue.

https://maxima.org/forums/7th-genera...e-cluster.html

 

I would also try adjusting the pot to max and min just to make sure that isnt contributing to the issue. Most likely isnt the culprit but it is quick and easy.