I've been worried about that. I've got an absolutely stock headlight bulb on this thing, came with the "year and model correct" headlamp bucket I bought for the restoration. I've never ridden the bike at night but have heard horror stories about the stock headlamps on these things.
Some have mentioned you can fit other bulbs into the stock buckets, is that what you did?
Bucket and ears are back wih me after he noticed a little minor rust starting to form on some of the inside areas of them and suggested it would be better to treat and put a halt to it now instead of later.It's not visible when they're mounted on the bike but if I don't do something now it'll eventually travel outwards and start to pit the chrome.
The parts are currently soaking in Evaporust and whatever that doesn't get is going to get hit with a very light brush on coating of phosphoric acid &/or the electrolysis method before all being coated with that "chrome" bumper paint I bought.
The acid etching method is fine for starting out on things you'll never see like the inside of a gas tank but I'm not sure it would play well with anything that had chrome on it. I've also noted most people have mentioned some pretty darn strong mixtures of acid:water when etching, I stuck with about a cup per gallon when using muriatic (~32% hydrochloric) or 92% phosphoric. Citric is probably safer than any of them but I'd start with at least two cups of the powder per gallon of water, it's a fairly mild acid.
I do love using the phosphoric at times as, after it's eaten away the loose stuff, it tends to convert remaining red rust into the more stable black oxide form - hard as a rock and will take paint. Some of you already know that phosphoric acid is the active ingredient in Naval Jelly, I just buy it as the concentrate since it doesn't cost much by the gallon from the same place I buy my citric in 50 lb buckets. I keep the stuff around at my job because I occasionally treat the domestic water systems with it in very mild form. It's USP rated (safe for human consumption) and works wonders to keep scale deposits at bay in the system, we've got fairly alkaline water here.