1997 Security Alarm System

[freserf]

I had to replace my driver door latch. My keyfob lock/unlock function also deteriorated at the same time. Currently I only have the chip inside the keyfob. It is still recognized and able to start the vehicle. After replacing the door latch I have these issues. I can manually lock/unlock the driver door, but the passenger door does not lock/unlock. The central locking switch inside the vehicle does not work at all now. I tried the 9-pin door latch, but no luck. I now have the 8-pin latch and it seems to work, but obviously I don't have full function. Windows perform the door opening down without issue and I can fully roll the windows up and down with the key from the door latch itself. The interior lights work when pulling the handle and the alarm goes off if I try to manually open the passenger door because it doesn't lock from the driver door with the key. Lastly, the alarm LED on the dash waits about 5-10 seconds before it starts flashing twice every 2 seconds. The Bentley manual states that this is an alarm triggered, but the alarm doesn't trigger unless I open the passenger door. The obvious problem is the passenger door not locking from the key in the drivers door. It was working just fine before the keyfob internal board stopped working. Any suggestions? Any luck using a Volkswagen door latch as a replacement?