4 wire's? Depends if its magneto or so also. All it does is counting sparks to the plug so to say, so one wire needs negative coil info. But there are soo many types.
WellThatsSurprising Member
Age : 27 Join date : 2012-04-30 Points : 5009 Posts : 407 Location : East Bethel, MN
Indeed there are loads of different types your can get, some use a Hall effect sensor and counts the magnet on the flywheel, others the EMF current in the spark cable and counts the rpm that way.
Check out the link that WellThatsSuprising posted or I have a tach on my tractor which I did a video on (FearlessFront has the same on his race mower(copy cat ) )
Marines2621 Member
Age : 27 Join date : 2012-12-31 Points : 4585 Posts : 215 Location : Mountainburg, Arkansas
I got a regular tach for a v8 it changes from v8, v6, v4 If u get a tach like this, Wire your green wire to your kill switch if your running your own electrical system, if not wrap it around the spark plug, The red wire is for the positive side of battery, the black is negative, and the white wire is for the light, could run a switch, its optional to run the white wire. Hope this helps
WilliesBuilds Member
Age : 29 Join date : 2013-06-19 Points : 4571 Posts : 329 Location : Florida
Subject: 
February 25th 2013, 11:25 am
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