My 88 Ramcharger has power door locks. The switch does not activate them or even make a sound when you push it. I tried to lock it by pushing the lock down with my hand and it will not move. I tried locking it with the key from the outside and still nothing. Does anyone have any experience with this problem? I have never worked on power door locks so I am not sure where to start or what the problem may be. Is the switch bad? Is there a problem with the linkage? Thanks in advance.