okay what i'm doing here is hooking attack up to my off-road lawnmower 12 horse 12 and half horse briggs and stratton i went through and did a bunch of port work to it and and clean everything up and got it all painted up what we're doing is hooking attack up you hook the tack up to the bottom side of the coil or the kill or the kill switch wire comes off and then you just run out you tie off of that line because your kill switch then also over to the sending side of the tachometer on this one here i just use the honda outboard tachometer you can use any outboard manufacture any boat tachometer inboard outboard probably work as old it's got pull settings this one here is this set for switch number one which is for polls that's where it's that's where it's reading out the best one started up here there it is idling divided about 12 honors a little bit over that's how your wiring at a commoner