Low Beams burning out

[Cephas]

I've started to go through low beam H1 bulbs at a great rate.
Both bulbs went within a week, so i replaced them with some Narva ones.
One of those died two weeks later. Since then I've done 2 more bulbs.

My 92 520 doesn't have an obvious LKM in the fuse box.
Should I be looking at the voltages on the head lights?
What would cause the regulation to get out of wack?

Could it be related to my "Pulsing Dash lights" issue
http://www.bimmernut.com/forum/showthread.php?t=38109

Thoughts appreciated.

[Ferret]

You may well be experiencing huge over-voltage if you're getting pulsing dash lights and your regulator is shot.

Get a DMM or an Oscilloscope over the battery contacts while running, and rev up your engine and watch the voltage carefully.

[whiskychaser]

Get a DMM or an Oscilloscope
Then get somebody to calibrate the scope:D Seriously though, they cant be as cheap as a DMM or as portable. But I'll be pretty pleased if you come back and prove me wrong

[Ferret]

Then get somebody to calibrate the scope:D Seriously though, they cant be as cheap as a DMM or as portable. But I'll be pretty pleased if you come back and prove me wrong

http://www.maplin.co.uk/images/300/rs82d.jpg

10MHz handheld personal scope for the same price as a good DMM :)

Admitedly not in the £4.99 bargain bucket, but hey, it'll work on practically anything in a car, with maybe the exception of injector signals (I have no idea what frequency they run on, and there's a 40MHz version of the scope available too)

Maplin (http://www.maplin.co.uk/Module.aspx?ModuleNo=32611&C=Maplin&U=SearchTop&T=oscilloscope&doy=13m5) totally win sometimes :D