K-9 Classic Alarm Installation

I have 95 honda del sol and could not figure out where some wires go to. here's the image scanned of the installation manual.

1. On the main unit, there are 2 wires. one for "(+) door pin switch" and "(-) door pin switch". And there are "PWR DOOR LOCK" and "PWR DOOR UNLOCK". How do i match up these 2 wires? And this is all i need to do so alarm unit can lock and unlock the door?

2. There are 2 wires for the dome light. one says "Dome Light output - connect to vehicle dome light wire" and the other one says "Dome light input - to (+) or (-) as needed. What's the difference b/w these 2 wires? on circuit diagram it says DOMELIGHT BLK/WHT(-). Which i sould connect to this wire from the circuit wire?

3. There's a port that has 4 wires and says, "Red Port - Doorlock output." what is that for? Do i have to connect it to somewhere? (on the manual, it's circled