Alright, ive installed the 280zx dizzy. It starts and runs and sounds pretty good. I followed the wiring from this where it talks about getting the tachometer to work with early z's. http://atlanticz.ca/zclub/techtips/distributor/index.html The tachometer still wont work. I have a three wire tachometer. Ive connected the GW and BW wire together and put on positive side. Also there is a wire coming from positive side to the e 12 80 and the neg side to the e 12 80. Is there something else i have to do sense its a three wire tachometer? I also have bought a 280z tach from someone on hybridz. will be here in the next few days. Ill try that one to see if it works or not. ide like to keep the orginal z if at all possible.

heres an overview of it all.

close up of the e-12-80

the black wire is going to the neg side of coil. and the grey wire is going to the positive side

here is the coil side of it all.

Cool. Since you have a 3-wire tach you don't need to bother with the early tach stuff. That is only required for the 4-wire tach. Try the new tach when it arrives. That will likely solve the problem with the tach. Also, you might need the resistor as shown in the diagram for the fuel injected model.

ok thanks, ill give it a try when it arives and let you know how it goes. Thanks again for the help.

Ok, got the 280z tach, swapped its guts to my 240z tach. it works!!!!!!!!! well anyways, i now can tune the carbs! cause the tach works. haha. thanks for the help beermanpete! also i hope this thread helps others. if anyone needs pictures ill post up what i can.

Excellent!