How do i get spark for coil?

Replace the /the ignitor switch in the distributor electronic control switch its the ignitor in your distributor its the unit the wires going into ur distributor makes them complete ur spark

crank sensor or Cam sensor will cause a no spark if they are not functioning.

checked power the ignition coil should be a gr/or wire or so, its a 6cyl so the coil shoule have 4 wires, the rest is the coil driver wires which provide ground, connect one end of test light to power and probe the coil connector circuits.ligtdeal

Not sue what you mean by brain box. You may need to replace the ICM the Ignition Control Module that sits right below the coil. Mine cost almost $300 locally, but found them online for less then $100. When mine went out in my 1985 Toyota pickup I was doing about 45 MPH and it was just like someone turn the key off., dead, no spark nothing. I ran the troublesooting steps in my repair manual and found it was dead.

Good chance on a vehicle that age that the pick-up coil in the distributor is bad. Also you need to make sure the distributor is turning. If the distributor is not turning, you could have a locked up oil pump, or a bad timing chain.

Did you check timing chain ???

If you check and test the coil, cap/rotor,distributor pick-up coil, ignition control module the only one left is the brain box (ECM - Engine Control Module)

is there power to the coil when ignition switch is on? If L-6 motor check position sensor at top of bell housing at firewall, common problem on these, Distributor components?

Replace the brain box. $100 from parts store, $75 from junk yard.

Two things.
1. does your car have three seperate coils ontop of a module or is it all one piece? If it is the seperate coils you might wanna change the module that they mount to.
2. If its the all in one (magnavox) coil and you are sure all the parts you replaced are in working order then you might wanna have the timing chain checked. It may have broken and if the cam isn't turning you wont get spark.