gl500 stator

Hey guys... So here is sort of a dumb question but... I’m looking to change the battery in my Gl500 with an 8 cell antigravity battery. I was told that I need to get a new regulator and people suggested the mosfet Shindengen FH020AA. Not that this should matter but the bikes ignition system is...

Hello all, I'm new to this forum and to owning a motorcycle. I recently bought a 1981 GL500 with 17,000 miles on it. I love it. Anyways, I started having electrical problems with it a few weeks ago. First, my battery died after I left the lights on for about 3 minutes (probably just my fault)...