Hood Light

I have with a 99 2500 4x4 and the light under the hood stays on constantly.
When I first got the truck I could have sworn it would only come on when you lifted the hood, but the other night we were trying to get the cat back in the house and my wife noticed the light shining from under the truck. I tried to find a switch for it but had no luck so I just unplugged it. Does anyone know where the switch is located?

I'm fairly certain the switch is inside the light fixture, probably can't replace just the switch

bend the light down a little bit they are flexible. Jermey is correct about the switch you have to replace the whole thing from the dealer. 99% of the time bending it down works works.