4 amps at 12 volts is just 48 watts in total, this is only available after 2600rpm as well.
With a 35w headlamp, 5w tail lamp and general battery charging duties you will find the battery runs down when in traffic.
My daily commute takes me through lots of unlit woodland and it can be difficult to navigate with dim lights.
Avoiding the expense of a HID system, I did find some 12v LED spotlamp bulbs in a local electrical factors.
I bought two.
One is a 5w spread beam in cool white (on the right of the picture)
The other is a 35 degree spread warm white with 3x 2watt focussed cells.
I had an old pair of Enfield indicators so hole-sawed out th centres and epoxied in the bulbs
![Image](http://i301.photobucket.com/albums/nn69/DaveWarham/BothSmall.jpg)
The spread beam has been on the bike for a few weeks and works brilliantly - especially for illuminating roadsigns as the scotchlite really picks up the bluish tinge.
I've just finished the 35 degree fitting today but I'm hoping it will light up the roadway through the dark woods.
I'll report back after tomorrows dark ride home from work.
Cheers
Dave