Outer Limits 4x4 Board

want to know how to wire up a tacho and what are the connection to the tacho as my hilux never had a tacho and have changed it with one that had a tacho

want to wire it up to a Holden engine v8 efi atm I have a small tacho wired up
some pic would be handy aswell

Model of hilux & pics of the tacho would be good.

it's a 85 yn65 hilux never had a tacho was running a 3y but now it has a 304 efi in it
i have replace the dash with one with a tacho from the same model that was running a 3y




that's the new dash I'm using and want to know what is the connection for the rev tacho and how to make it run at the moment I'm using a small rev tacho