front lights mod legal requirements

[Jules-C]

Apart from 100W being illegal (although how could anyone tell easily?) the alternator puts out 18A at 5000 rpm. Two 100W is going to take about 16A so you have bugger all left for tail lamp (0.5A), brake light (2A) and indicators (2A front and 2A back).

And don't forget the ignition system probably takes between 25 and 50 watts so that's another 2A to 4A.