Hi Johnny,
Welcome to the world of alarm electronics. I'm going to get to the wire connections in a minute but first I want to warn you that the alarm industry evolved its own nomenclature a few decades ago and what alarm manufaturers call "Normally Closed" (NC) and "Normally Open" (NO) is exactly opposite what the rest of the electronic industry calls them. The "NC" mag switches you have are what most electronics people call NO switches, i.e., they're normally open; and are closed by a sufficiently strong magnetic field.
So before you start, take an ohmmeter and check the C (common) and NC (Normally Closed) terminals on the PIR (unpowered) and notice that the loop (zone) relay contacts are Open, because in alarm industry terminology, the "normal" state is the state of the relay when it's operating, i.e., in a powered-up state. As I said, exactly the opposite of the rest of the electronics industry.
Now that I've hopefully stopped any potential confusion about how the PIR's C-NC terminals, the zone loop/circuit goes through the relay contacts, i.e., through C and NC, but there has to be an End-Of-Line Resistor (EOLR) in series in the loop (alarm jargon for "zone circiut'). Your panel should have 2 EORL's for each set of zone terminals in the control, 2.2Kohm for the primary zones and 3.9K for the secondary zones.
I'm assuming you understand this if you have the zone ready, but if you don't, just let me know and we'll walk through it. I'm also assuming you have the installation and programming manual and have programmed the zone as interior instant or follower, whichever is appropriate. If not, let me know.
The "3K9" terminal might be an unconnected terminal point to connect one loop wire and one end of your EOLR, but I don't have the cutsheet for that model either, so try this: Connect the end of one zone/loop wire and one end of whichever EOLR you're using (depending on which zone you're using) into the "3K9" terminal. Connect the other end of the EOLR into NC, the closest relay terminal. Connect the other zone/loop wire into the C terminal. When the PIR is powered up and nobody's triggering it, the loop wires at the GEM control panel should read whatever the value of the EOLR is. They're ready to connect to the zone.
If I was wrong about that "3K9" terminal, just forget about it and solder that loop wire to one end of the resistor and connect the resistor's other end to NC.
As for the "Tamp" (Tamper) terminals, that's mostly for commercial applications and can be disregarded unless you really want to get into it.
I know alarm wiring can take getting used to, even for an electronics hobbyist, so if I've left some confusion here, let me know and I'll try to clean it up.