Red: Headlight Test

So the headlight has 2 wires for high/low and the body is ground.  Electrics are good, but for some reason I can't remove the bulb itself.  Not sure if it's just sticky (seller said these are NOS that are 30-30 years old now) or if I'm doing something wrong.

Also, 1 wire has a soldered red wire coming out of it.  Thought it was odd, but seller says they're all like that and it's so you can run another power wire out of it if you want to (for something like a speedo lamp maybe?).

Is it better to just leave the bulb alone and ride with it until the day it pops, then figure it out?  Probably...