1989 yamaha waverunner ?

I do not have spark after I replaced the cdi unit and brain box, I did before I put the spark plugs in and tried to start it but after about a miniute of cranking removed the plugs and there was nothing. Is there a fuse? also there were two green wires going into the crankcase I assume the points and there is no color difference can they be hooked up wrong? . Please help if you can.Thanks Dion