This is for everyone trying to figure out there electrical problems, like no lights, or no spark.

enjoy


you need to check all the electrical with a digital or analog meter,

check the coil, standard : 0.1-0.3 ohm
(test where the wires connect to the coil)

secondary coil, standard: 7-11 K ohm
(test where one wire connects to the coil and the other end by the spark plug cap)

If the secondary coil test is out of spec then take the cap off and measure the secondary directly where the cap screws in
the resistance should be in thisspec, Standard: 3-5 K ohm

check the stator, Standard : 50-250 ohm
(86-88 disconnect the black/red wire check the resistance from the blak/red wire to the ground)
(89 disconnect 2piece connector and check the resistance to the ground)

check the pulse generator, Standard: 50-200 ohm
(disconnect the pulse gen and check the resistance with the blue/yellow and green/white)

check the AC regulator, Standard: 86, 13.0-15.0 volts@ 5000 rpm
87-89, 12.0-14.0 volts@ 3000 rpm
(start the motor and hook up a tach, measure volts between the white/yellow and green wires at the wire harness side of the connector, if this reading isnt in spec check the alternator lighting coil, if the coil is ok, replace the regulator)

check the alternator lighting coil, Standard: 0.1-1.0 ohm
(86-88 disconnect the white/yellow wire from the stator
89 disconnect 2piece connector, check resistance between white/yellow and ground)

Replace any of these components if they do not measure in specifications