Broken Trimark RV door lock (06-650)

Not knowing about many coaches, but generally there is a trim strip or facing around the door on the inside. It is usually just glued or tacked in place, as it is added after the door in installed, to cover the gap. Behind that, you can see the lock striker plate, with the door latch sticking in it. I used a bent scredriver to reach in and push the latch back enough for the door to open. When replacing the lock, the striker plate has to come out from the inside to be replaced with the new one. The newer Trimark 1650 lock will not fit the older striker plate, so that is part of the job. So the whole secret is getting to the door jam and striker plate from the inside. Even if you can get the inside plate of the lock off from the inside, the latch assembly will not come out unless the door is opened. Hope this helps someone else, Its always nice to pass help forward.