Anyone recommend a good upgrade to the stock Bandit headlamp? I'd prefer to just buy a better bulb, maybe a wiring realy..
PIAA or Hella?
Does the Bandit have a regualr H4 bulb?
It does indeed have a normal H4.
The relay harness will do you plenty of good. With said harness, you can safely run at least a 120 W bulb. I ran such an animal for a short time. It threw plenty of light, but it only lasted 8 months or so. You'll get a slight improvement with the harness and a stock bulb.
The Osram Silverstar bulbs are well-regarded, but hard to find. You're looking for the clear ones, not the blue-tinted ones (those are bad: tint=less light output).
Some folks have had luck running both filaments of the H4 at once. I haven't tried it. There are obvious problems with that arrangement.
I eventually added Hella FF50 lights, detailed here:
http://forums.banditalley.net/viewtopic.php?t=4350As good as the stock reflector is, it doesn't put out nearly the spread of these things. Truth be told, at eBay prices, those were a better deal than anything else I tried, though I needed my relay harness to run them.
Lots of options.