Go to an electronics house that sells resistors. Buy any size resistor. The bigger the piece of glass, the more heat it can withstand.
This is like a kick stand switch. You connect a ground and a hot to complete the circuit. Say you short something to ground direct. That will cook the wire and there is your smoke of the short in the system.
But if you take a simple tail light bulb, use this as your resistor, that light acts as a resistor and takes the 12v to heat the filament to glow.
So if there is a switch waiting to connect two wire together, that is like you turn the key on and the tail light turns on that completed the circuit. Same principal you touch two wires at the kick stand and that completes a circuit acting like a key switch.
If you do not short a fuse, then the PAIR wire works like a turn signal flasher is to touch both wires to complete a circuit. Same old loop said so many ways.
Stick a paper clip in each pin connector. If it has two wires at the PAIR, that says connect me together.