Should I be worried - blown bulb?

[MGB]

I'm going to try that tonight - disconnect both bulbs and see if the fuse holds.

I'm thinking if the fuse is ok, the bulb(s) are shorting it out (one burned out bulb does look weird, like things are fused together). If I have a short, I think the fuse would blow even with the bulbs unplugged.

 

[MGB]

one of the blown headlight bulbs had fused togther inside the glass, appears it was creating a short circuit. A new fuse and two new bulbs and i'm good to go.

The giveaway was when I put in a good headlight fuse, unplugged both bulbs, and ran the bike. The fuse did NOT go bad.

 

[Checkswrecks]

While Frez is out replacing his bike.
)


Seriously, I recommend that when bulb's start to fail - replace them in sets. The surface of tungsten filaments greatly gets more coarse over time, as shown in this photo. As they are then shaken during use, bulbs will break at the coarsest pits or ridges. This means that if one goes, another of similar usage probably won't be too far behind.

I'll go back to my nerd box now.

 

[Don in Lodi]

CW, can a bulb short in such a way as to blow a fuse? A light bulb is essentially a short that glows anyway.

 

[tomatocity]

CW, can a bulb short in such a way as to blow a fuse? I light bulb is essentially a short that glows anyway.

The filament is the load/resistor.