Originally Posted by LETMGROW
Where did you probe to get the battery voltage? I have to assume this is a side post battery so correct me if I'm wrong. Probe the battery cables without touching the bolt holding them to the battery. Did you have the same voltage reading? If so find a spot on the frame and clean it shiny then touch the battery positive cable with the + probe and the shiny frame spot with the - probe. If you get the battery voltage reading you had the ground is good. If not you will have some cleaning to do at the battery and ground to frame connections. If the reading is OK you will have to go to the starter where the battery + cable attaches. Don't touch the cable but try to contact the end of the stud holding the cable on to the starter. Got voltage? The battery + cable is good.
If this doesn't show you anything get back on here and we will go from there.
My apology for having to quote this but I left a step out. If you don't get voltage at the end of the stud on the starter touch the cable lug where it goes on the starter. If you get voltage there and none on the stud the cable is good but the connection itself is bad.
It could be a bad fusible link but there should be two separate feeds for the ignition and the lights. ( two fusible links ) Unlikely both went bad at once but anything can happen.