there is a pic of what is needed on this website. I have kept the ballast resistor. All u do is hook the black cable to the POSITIVE coil terminal, the other cable, blue? to the negative. U also need to hook the tab, near the vacum advance unit to earth.
Heres the link :
http://datsun1200.com/modules/nsectio ... p?op=viewarticle&artid=58