blowing head lamp

[ard]

Hello everyone, what causes a head lamp to blow, this is how it hapens, put a new bulb turn the switch on works start the motor the light comes on few seconds later it blows the headlight. Any ideas where to start looking for the problem?

Ard.

[Anonymous]

I think your regulator/rectifier has quit. Check your bikes voltage when running...it should be below 15 Volts I think you're up around 18 - 20

Steve

[KGB]

What size fuse is in there?
What wattage lamp?
I run a 10amp fuse and 90/100watt headlight.

Once in awhile the fuse will blow, never the headlight.

Checked the plug for the lamp? Might be grounding out in there.


Like Steve said, check the voltage

[earlfor]

The max acceptable system (battery) voltage is 14.9
Anything between 14.5 and 14.8 is preferable.

Earl

I think your regulator/rectifier has quit. Check your bikes voltage when running...it should be below 15 Volts I think you're up around 18 - 20

Steve

[earlfor]

Re: blowing head lamp

I think Steve is right. Sounds like your R/R is outputting too high a voltage
Engine running, regardless of engine rpm, the voltage at the battery terminals should not exceed 14.9 and should be less.

Earl

Hello everyone, what causes a head lamp to blow, this is how it hapens, put a new bulb turn the switch on works start the motor the light comes on few seconds later it blows the headlight. Any ideas where to start looking for the problem?

Ard.

[leslo]

I kept blowing headlights too.
Then I replaced the headlight recepticle (ya know, where the wires plug into the headlight) and haven't had a problem since. The recepticle was all cooroded and had actually melted in one spot.

[Anonymous]

If it's a Halogen bulb, you can't touch the glass before installing, I made that mistake once a the bulb blew out in a day.