Warning mini bars, light bars and beacons on this site list 12/24V operating voltage. Work lamps and forklift safety lamps list 10-80V DC.
Warehouse trucks run 24V, 36V, 48V and occasionally 80V packs. The 10-80V window printed on FK and WK pages lets the lamp sit on mixed fleets without an extra DC-DC box.
Always size the fuse and the ground to the current on the spec sheet of the exact SKU.