7528 bulbs

I've had 2 Sylvania 7528 bulbs (from AutoZone) in the tail lamp and they last about 1 or 2 days. Will the 1157's last any better? It's always the running light part.

Dave
69S

Huh, I give up, which one won? I tend to lose wire connection to bulbs more than lose bulb filaments. Also might be a bad batch as happens in spark plugs.

DogT said:

I've had 2 Sylvania 7528 bulbs (from AutoZone) in the tail lamp and they last about 1 or 2 days.

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I suggest you remove the tail lamp lens, then start up and check if the bulb is rattling in its holder as you rev the engine?

DogT said:

It's always the running light part.

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The tail filament is the thinnest wire of the two-so it's usually the one that breaks from vibration.

When I bought my Commando I was experiencing the same problem of the tail filament constantly blowing.
With the lens removed, I could see that the bulb was vibrating like a tuning fork in the lamp holder at certain engine RPM so I wrapped an elastic band around the bulb base to prevent it rattling, and the bulb has not blown since then.

Thats a good trick with the elastic band .

Ashley

Actually I remember the lamp holder was pretty loose in the assembly. I'll check it out.

Dave
69S