All SVT's have keyless entry, and the control unit is (as stated_ behind the glove box. There is a small relay, but the only NOTICEABLE clicking that you should hear when using the key fob would be the trunk release buttonm or locks.
Try this. Lock your doors. try locking them once more.. you will find that instead of the familiar whirrr of the motors, you will hear nothing, and then a small (FAINT) click at the end of where the whirr would normally be. If THAT is the click and same place, then you are either inadvertently operating the key fob, or you have a problem with the controller working on its own.
(Second thought.... is your truck "magically" open any time? that would explain it, otherwise maybe your locks. try unlocking your car whenever you hear the clicking, and see if your car locks when you hear the click the next time.
Ray
