Under the edge of the tailgate.
Follow the instructions on Youtube.
That is incorporated with the latch assembly.
A 1994 Mercury Villager, also known as a Dodge Caravan, can have its rear hatch removed by detaching the pistons which hold it to the body of the van. The pistons will be held by screws and removing them will allow the hatch to easily come off.
There is no separate switch for it. Pushing the light switch will defeat the dome and courtesy lamps.
It mostly uses pop-off fasteners. There are one or two screws at the top for a cover.
Have you checked the rear hatch glass ?? Open it and reclose it firmly.
You will probably find it is a mercury switch in the wiring bundle.
its covered by the plastic panel that holds the hatch switch and the hood release
You can not open the rear hatch door from the inside.
Unfortunately I've been having the same issue. If I lock the car, then unlock the car, the hatch won't open. If I drive it once or twice without locking the car again, the hatch is magically unlocked. I wish I knew the logical answer to this problem!
Check your rear accuator. It is a black box with a brown rod on it. It is located underneath the rear hatch paneling. Hook up 12 volts to it after its out and see if the accuator moves. Don't put the voltage on it very long either.
A mercury switch is used for connecting current to a under-hood/hatch light.