Just to add to what was said, the regulator when it goes bad either over charges or under charges. You will only find this out once you get the bike running.
What wiring diagram did you use to wire the bike? was it just using the stock harness and hooking up enough to spark or something in between?
On the 83 bikes there are a lot of safety items that can cause spark issues. The side stand switch and relay are one such item. It originally prevented riding the bike with the sidestand down by stopping the ignition when put in gear. If it has problems, like a bad switch or wiring it can cause spark issues.
How did you test tyhe spark? The TCI ignition uses a dual out put coil. This coil whenit fires runs spoark down one plug wire to the plug, jumps the gap then flows through the head to the other plug then jumps the gap, up the plug wire back to the coil. When testing you need both plugs hooked up If you don't you won't get good spark.
Leo
