Hi Viper, thanks for your help.
Well it turns out, me being the dumbass that I am, was just attempting to turn the headlights on wrong. To be fair though, there are 2 switches and both need to be on WHILE the engine is ACTUALLY running in order for the lights to work so I can be forgiven for thinking they didn't work.
As for the fuel gauge, I was told when I picked it up that they had filled it up for me a couple days ago so rode it a good 20 miles or so home while the fuel gauge was showing empty (I could see there was fuel in the tank but not how much). I ran out on the way to work today and had to fill up using a can. When I started her up again, the fuel gauge was working so I don't know if it's just a bit sticky or if I was actually pretty much out of fuel and she let me go that far on red. Time will tell with that one, I guess.
According to the bike breakers, these bikes don't normally go for 20 years and I have the 2000 one. He seemed quite impressed with the condition she is in.
Trying to upload a pic that meets the file size requirements, please bear with me.