Please help. 1985 Fourtrax 250 NO SPARK!!

Hello everyone I am new to the forum here and I would like to say thanks in advance for any help you can give me. I bought an 85 trx250 with no spark. Now I I downloaded the manual and started to do resistance checks on everything. The coil checked out fine on both the primary and secondary and the exciter coil also check out at the black and red bullet connector and the other end to ground at 360 ohms. Now the pulse generator is supposed to have 300-360 ohms between the green/white and blue/yellow wires and I am getting no reading so an open circuit. Does this sound like my problem? Some forums says I need to check it for ac voltage but the manual says resistance? I don’t want to replace just that part if that’s not it since I will have the cover off. PLEASE HELP ME IF YOU CAN!!!