Front Navigation lights went out

Iam not good in hte electrical stuff, and my boats front navigation lights dont work. It is a 03 Mastercraft wanted to know if there were something that I can look for and change that wont take much time, iam going on a weekend trip this weekend and all mechanics are backed up. Appreciate your help, thanx.

Fuses, connections at the light and switch, grounds, make sure wires aren't split or shorting out...oh and bulbs?

Eric

guess what i just started to work on it and cheked the bulb, it is out. OS thanx.. ill se if i can find it to replace it.