to hook up the tach use the hot lead on the disributor and to any good ground wire and if there is a light hook it to the wire on you light switch
No. Hook up the power wire first, then the ground wire. The ground wire is what acutually draws the power to the unit. As you will notice the power wont turn on if just the power wire is plugged in..
Hook up the red wire to the fuse box or another wire that gives power when the key is on. Hook up the white wire to a wire coming out of the headlight switch. This will make is so that when you turn your headlights on, the light will come on on the tach. If you don't mind the light on the tach being on all the time then just hook it to another power wire. Hook the black wire to a ground like a screw or a bolt. The green wire is the signal wire. Run it through your fire wall. Hook it up to the negative side of the coil. There will be a negative sign on the coil denoting the correct side.
Hook positive up first, negative last.
the purple wire
you hook it up to the white wire that comes out of your O2 sensor
Hook it to the negative side of the coil.
that wire is for the radio dimmer. when you turn on your headlights the radio dims so your not blinded at night. Some aftermarket stereos have a place to hook this wire up and some don't.
get the right oxygen sensor
no
You would hook to the negative side of the coil. Some HEI distributor caps are marked "tach".
Sure. You can hook this up to any vehicle. It is easy to do. Just make sure you have the proper gage wire for the amp as a small gage wire can heat up. Also with a smaller gage wire you will lose some power to the amp.