Hey Buddy, I'm a noob here myself. Have you unplugged the plug to the headlight and put a volt meter probe on the main pin of that plug with the power on to verify power to that point? I have a 76 cb 750 f and I believe mine has a dedicated fuse for the head light.
Welcome, Check our classified section here as guys are always acquireing bikes and selling parts. You may also try your luck on Ebay..You may pay a premium for what your looking to find but there's nothin like ridein the lightnin... Good luck boys...
Wheel ring re chromed by Kyron Plating and off to the shop for re lacing.. I purchased new spokes from CB 750 Supply and a Bridgestone Battleax rear tire from Motorcycle Superstore.. Hooah!