I just bought a new tach, an aftermarket one, because mine seems to be out of whack, it says im running 0 rpms in idle and i know im not, then it says im almost redlined at 3, and the car runs fine, so i had to go out and get a new one (new toy) but i don't know where to intall it, the intructions are for piston engines, it says to run it off the negative cable of the distributor, but i think we don't have A distributor, not sure about where i shoudl put it, any one know?

 

Each ignitor pack (leading or trailing) has a short wire with a female bullet connector on it.&nbsp Tap into this - I think you need to "configure" the tach to read a V8(?) signal, cause it fires every other revolution of the e-shaft.


-Ted

 

so wait, i tap into each one or i tap into any one of them, if its just one, which one?

 

Either or - most people tap off the trailing one, since it's closer to the firewall.


-Ted

 

Thanks a million bro, you saved my life, i didink't wanna wait until tommorrow, i wanted to get everything done today, since today is my birthday, today i am officially 16. A night out on the town with a new tach is nice for any little encaounters with the typical HONDUH or other racer. Thanks again

 

But, If you tap It Into the Trailing Coil Pack you have to set It at 4 cylinder, as opposed to 8 cylinder for the Leading Pack.

 

I heard the signals are the same?&nbsp Can anyone else confirm?


-Ted

 

The leading plugs are fired in wasted spark set-up, so the leading coil (one double post coil) fires twice as often as the trailing coil. The leading coil fires once per rev (like an 8-cyl) and each trailing coil fires once per two revs (like a 4-cyl). The trailing coil is closer anyway, so use that one and set it to 4-cyl.

 

so wait, which is leading and which is trailing?

 

hehe. nevermind, figured it out.