We use the Baja Designs Dome Light w/ Switch in all of our pre-runners and race cars.
DESCRIPTION
These LED lights are waterproof and can be mounted virtually anywhere. All that is needed is 12 volt power. They have a 180 degree optic to illuminate your cab, engine bay, wheel wells or anywhere else you need a bright and smooth light.
Caution: Dome Light w/ Switch can get very hot when used for long periods of time. Please use caution when handling or installing.