I have this Lil' Scooter named Honda Activa.
And like most other 2 wheelers, It has so called "Headlights" that are dim as candles.
Stay with me and you'll learn how its easy to make them very bright and for not much.
Step 1: The culprit
Most of the people might be thinking that the weak link for poor illumination is the weak electric system, however that being true, the worst thing is bulb itself.
The standard 2 wheeler bulb spec is dual filament 35/35 tungsten Globe. That generates a dismal 600 lumens, dimmer than most modern flashlights.
Step 2: What to do and how to do it...
I just casually opened the headlight and found that the poor 35W bulb looked more like car H4 55w lamps. And i thought "Why not!" If i can retrofit a proper Halogen 55W car headlight bulb, I can have a good 1100 Lumen output, about 80% increase!
However the Bulb was not a straight fit but Fret not! Use a plier to slightly bend the lower tabs as shown in the Pics, and it fits perfectly! Proper alignment too.
Step 3: Fire it up!
As the H4 and Scooter bulb bases are little different, Simply buy a H4 holder and wire it into the factory power supply. Both Bulbs are 3 wire configuration so you should'nt have any problem here. Do check for proper High-Low Beam operation before finalizing anything.
Use a multimeter to help out with wirings.
Step 4: Enjoy.
I've been using the activa for 2 months now with the mods and zero problems yet.
1>.the beam pattern with 55w upgrade is same which means less glare compared to other mods.
2>.If you are worried about electrical load-
activa alternator is designed for maximum load of 35w headlight
21w turn signal
21w brake /rear light,
5w number plate light /meter light
hence it's capacity is easily sufficient unless you're trying to use everything at once.