How do i install a tach??

I have a 2000 mazda b2500 4 cylindar 2.5 L and i was wondering if anyone could explain to me or give me some sites on how to install a tach. all the help i can get would be nice. and about how much hp and tourque does it have stock???

Thankz_

easiest way is to try to find a stock cluster with a tach i am pretty sure it will plug right in or check etm for correct wire to connect, how much power/torque does it have ha ha ha surely no where near enough just enjoy your gas economy truck. The b2500 is a good truck just under powered.

Attach the lead wire from the tach to the green wire on the alt.