The usual idea is that with 2 wires; one is ignition controlled 12v and goes to the resistor (block on the side with two terminals) so that the coil receives about 9v during normal running.
The other wire is 12v when the starter is operated and is used to feed the coil with 12v so it gets a higher supply voltage during starting - to offset the voltage drop during the starting process.
A quick diagram:
The usual idea is that with 2 wires; one is ignition controlled 12v and goes to the resistor (block on the side with two terminals) so that the coil receives about 9v during normal running.
The other wire is 12v when the starter is operated and is used to feed the coil with 12v so it gets a higher supply voltage during starting - to offset the voltage drop during the starting process.
The usual idea is that with 2 wires; one is ignition controlled 12v and goes to the resistor (block on the side with two terminals) so that the coil receives about 9v during normal running.
The other wire is 12v when the starter is operated and is used to feed the coil with 12v so it gets a higher supply voltage during starting - to offset the voltage drop during the starting process.
A quick diagram:
