[old31]

Originally Posted by wmws

I use this model from Westech.com Works well.
Model: 2CT32-6V
Price: $124.65
Tachometer 3,500 RPM, 2" round, std pt ign, 2 imp/rev, 6 volt pos or neg grd ( 4 cyl )

I am using the same one and it works well.