This is from my post in the BIB section. But because this tach has dip switches on the back it easily adjusts to your type ignition too. So Im posting for you guys/gals also. My post in BIB shows the different styles too. OK, I finally got one of those MMB mini tachs. Its great & very responsive it doesn't lag behind going up or down. I was going to take a pic of the back so you could see the two small dip switches that let you easily adjust it for different engines & ignitions. But I forgot
. The tach is a 48mm, the ignition switch hole in the nacelle is 46mm after knocking out the pressed in chrome piece the switch is in, so it just takes a bit of grinding to fit . To my surprise the stock Ing switch fits fine without the chrome piece in the headlight nacelle off to the side, plenty of clearance between it & the headlight. So no rewiring needed. PS: I have a throttle lock cruze control, locked to a slightly higher rpm while its warming up, that's why its showing higher than a normal idle.