No Voltage to Distributor on 1990 Nissan Pickup (D21)

I have a 1987 Nissan D21 with a z24 engine that will not start. I have no fire at the plugs. Have battery voltage at coils. I have one wire one the distributor. There is no power to this wire with key on. I also checked for voltage here during cranking. I need to know how much voltage should be here , when it should be here and exactly where it comes from.

Asked by for the 1990 Nissan Pickup (D21)
Were you able to find out why the ignition wasn't firing? Does this have points?
i had the same problem in my truck turn out to be the rotor inside the distribuitor.. i replace the rotor and the distribuitor cap. problem was fixed