sorry should have worded slightly differently;hi mate you should have a resistance if the bulb is ok as you haven't bulb u/s
Update (delayed due to bad weather and lack of daylight)I'd hazard a guess that the switch for the light is in the lock mechanism. Have you metered the lamp connector to see if you have 12 volts reaching the lamp? Is there continuity to earth from the connector ? It's not necessarily a blown fuse though the fuse is a likely possibility.
When I don't know which fuse is the one I'm looking for I simply find it by trial & error. Take each fuse out one at a time until I find the blown fuse or until they all test out good. It's not rocket science