I've had my eye on a lock for the back doors of my Transit Connect for a while now. The lock is the MasterKey HASP from screwfix, but I don't know how to fit it, where to drill the holes and whether or not I could damage some of the mechenisms in the door itself if I drill in the wrong place. I've been to Ford, they dont know. Ive phoned MasterLock, they dont know. Has anyone on here got a Transit Connect with a HASP lock fitted to the back barn doors?