i have just fitted a stack rev counter to my 3dr which is running wasted spark.
i could'nt get it to work via a direct feed from the ecu so after speaking to james @ msd he told me to wire it to the diode pack that comes fro the coil pack.
i've done that and now it works

but the rev counter is'nt moving smoothly when i rev the car, it seems to jump, any idea's?

 

does anyone know?

 

They use a stepper motor so will jump, but only where the scale is small. (If it's a 0-4000-10500 style dash if you get what I say?)

 

no not sure what you mean?

 

mines st200 model i think, if that helps?

 

 

I drove it from one side of the coil pack and set it to 2 cylinders.

 

mine is all big scale mate

like this

http://www.randbmotorsport.co.uk/sho...?ProductID=453

 

mine is from the coil pack but not sure how its wired up as msd put the wiring in.