Most LEDs are low voltage and require a cheap resistor for 12v.
If you know the type of LED you can determine the resistance needed - it might already be included in the wiring.
Just plugs straight into the alarm socket under the tank.
I investigated the Talon alarm (looks like good kit) but the Triumph plug and play wiring loom they supply is not suitable for the R3 - looks like the wires would need extending as the unit won't fit close enough to the plug - 8 wires to extend - and they'd have to be properly soldered and shrink-wrapped. Might do that. Thinking about which option is best.