[image: View Post]97VFR750F, on 19 February 2010 - 06:33 PM, said:
Hi everyone!
I'm a new member and have a question. I have a totally stock (except for the muffler) 1997 Honda VFR 750F. I bought it new and it's been the best motorcycle I have owned! I usually take it to a motorcycle shop for routine servicing, but one of the headlights are out and I'm thinking of changing it myself.
Do I need to replace the actual headlight or just the bulb? Do I need two bulbs? I want the original OEM replacement, so do you have a part number? Can I buy the bulbs at the local auto store or go to a motorcycle shop?
Is it easy to replace? I'm a total novice at this stuff so bear with me!
Can anyone give me instructions on how to do this? Thanks!
The OEM bulb (assuming your bike still has them) was a special-spec for North America, 45/45w (rather than normal H4, which are 55/60w), which are unfortunately not available anywhere but Honda dealers (and they're expensive, too).
For this reason, US VFR owners have been retro-fitting normal H4s for years and years. There are different ways of doing this, some better than others, but all work more or less. The most common thing to do is to snip or fold the two bottom tabs on a regular H4, as the OEM bulbs have their lower tabs in different positions. However, these tabs are locating tabs, which are necessary for the accurate location of the filament within the headlight housing. Before the introduction of laser-cut "H4 adapter rings" (available from places like California Sport Touring), the two options were the "nail trick" and modification of the headlight housing itself. The former involved bending the tabs up, trapping a straight nail against the body of the H4 bulb, which then supported the bulb in the housing in roughly the right location. The latter involved
cutting new notches in the headlamp housing using a Dremel tool, which was a permanent solution, but resulted in perfect alignment.
The adaper rings work okay, but they place the filament in a slightly wrong position--it may not be noticeable, however. VFR800s seem not to need the nail, so by far the most common method of using regular H4s on those bikes is to snip off the tabs and let the retaining spring hold the bulb in place. I once measured the actual difference in filament position that results from doing this and found that it also results in the filament being a few mm out, but whether it is enough to notice or not is a separate question...
How a VFR owner changes a lightbulb sounds like the intro to a joke...but is actually a good question, because it usually involves sticking your hand someplace you can't see and doing something that is a bit tricky even if you could see what you were doing. The Bob Peloquin page linked to above shows you what the spring clip looks like, which you could see after removing the plug and the rubber cover--and could get your head in a position to see the back of the headlamp! What you need to do is push down on the clip whilst moving it over slightly, so that it un-catches. Hard to describe, but not too hard to do after the first time you manage it...
Ciao,