FSM means "Factory Service Manual". If you look at wire diagram number 8W-61-3, you'll see that unlock requires a momentary 12v positive (+) signal to the pk/vt wire that goes to the CTM and lock requires a momentary 12v positive (+) signal to the or/vt wire that goes to the CTM (both wires are 18 guage).
The diagram also shows that these wires pass through connector number C246. If you go to the connector location charts, you'll see that C246 is a smaller connector right next to C200 (the really big connector under the driver's side of the dash at the fire wall.) If you go to the connector pin-out chart for C246, you can find the exact pin location for the two wire colors-- but that's not necessary since you can just dig for those colors.
I can't help you with how, exactly to hook up your particular alarm since they are all different. Just hook it up so that it sends the required signals to the CTM per above. (Sometimes that requires use of a relay, sometimes not, depending on the alarm.)
Making the actual connection--- In my case, I used an exacto-knife to cut away about 3/8 of an inch of insulation on the wires without cutting the wires themselves. I used a sharp "dental pick" to open up the stranded conductors and inserted the wire from the alarm, then wrapped the conducters together, soldered and taped them. If you're making a bunch of connections in one wiring harness, make sure you stagger the connections so the splices won't bunch up. Just un-wrap the friction tape along a length of the wiring harness to get access to the wires. When you are done, re-wrap everything with new friction tape to make it neat and secure.