electrical issue

Hey yall I'm new here. Got a Gen2 FZ1, purchased it when it was almost completely stock, but the guy provided a bunch of aftermarket parts that were obviously on the bike before. Have been putting a bunch of them on recently like sprocket, speedo healer, filter, slip on, etc. when I noticed...

Was on the highway and spotted an old man riding him fast without a helmet, caught up to him going 140+ kept going for a while. All of the sudden gages turn of bike is complete off.. checked ignition and killswitch. After stopping the bike checked all the connection, at home tried a jumper...

I have an 03 with electrical issues and came here to hopefully finalize my decision of whats wrong with it. Last fall I replaced the stator (due to issues I can go into detail later on if needed.) I took it out for a ride and stopped it for a break before heading back home. (maybe 20-30 minute...