it's okay, problem solved with the help of co-workers, a LOT of internet research and my dad...
it was as simple as just connecting the green wire to the negative side of the ignition coil..
looks like a beast,
Hey guys i've been searching the site for quite some time now,
and i've finally got a tacho..
now that i have one.. i have no idea where the RPM signal cable is.. so i can install the beast..
if someone could tell me whether there is a place, or if i have to buy some sensor's or something of the sort...
thanks a bunch