I got a prob of bulbs fusing out.A friend of mine suggested inserting a 20 ohms resistor to the "live" wire of the headlight to reduce the sudden surge in power.Any one knows wch wire is the "live" wire?
The EXC has a voltage regulater and unless you wired the headlight into the system and somehow bypassed the regulater you shouldn't have a problem.
I was installing some heated grips the other day and accidently went around the regulater. The grips got real hot and the light was very bright.
I was told the MXC doesn't have the regulater and if this is true then it would blow the bulbs right away.
The only other thing is if you are not using the correct bulb or the regulater is burnt out.
I should have known it was the EGS when I saw your location.
Can you get a volt meter and check what the voltage is going to the lights? I would think that it has a 12 Volt system so anything over about 14 volts would be to high. If it is high then the voltage regulater is bad or the wiring is incorrect.