Temperature gauge and fuel gauge illumination light is out

Hello,

To get the cluster out you will have to remove the trim around it first, then remove the screws that keeps the cluster in place (see diagrams below). Then undo the harness from the top of the cluster to remove it.
Be sure to disconnect your battery before getting started.

The bulb will simply twist out of the back panel. The factory part #6L2Z13466A.
Of course, there are plenty of after-market equivalent you can get from parts store or online.

Please let me know of any questions.
Thank you.