its a multi spark capacitive discharge unit which increases the power of the spark therefor increasing power, fuel economy and reduces engine pinging etc......and it also has a rev limiter built into it...........excellent for sport cars , racing and 4x4's
its all in the user guide manual.
i have a 78 fj40 with the gas 2f engine and it wired up and worked great, so it should wire up fine. I got the manual etc..... to show you how to hook it up. If you have done any basic wiring.....you should have no problem to hook it up.
the reason i am sellin it is bacause i swaped over to a chev small block...and i have no time to work on wiring it up. As well.......my cruiser is off the road for a while.