Radders, ive NO fucking idea about yours

Live to battery.
Earth to ground/battery.
Positive coil connector.
Negative coil connector.
Not sure why theres a 5th one, my guess is its some kind of ign cut switch or summat that can be grounded on a switch if you wanna use it, so prob dont need it.

Its time to randomly guess what colour is what wire I think mate, like I did mine Hey, it was free