|
If you have the OEM fogs on that early 944 they should be H3 bulbs. 55 watt is stock. Some people run 100 watt but there can be wiring and heat issues, and on an '83 you may melt the insulation off your stock wires @ 100 watts. They also don't work as fogs very well with 100 watt as the light backscatter off water droplets hurts your vision.
As to why one light is dimmer than the other, there could be four probable reasons. Road rash/sand blasting of the lens. This will diffuse the light and degrade the beam pattern. Not much you can do other than replace the lenses. Some have had luck with polishing up with compounds used in making telescope mirrors but that is a lot of work for not much cost savings.
The reflective coating on the reflector could be corroded. Replacement time as there is no cost effective way of fixing that.
Bad wiring to the dimmer bulb. Light output from a halogen varies at the 3.4th POWER to voltage changes. Lose just 15% of your voltage and you lost 50% of light output.
The final is just an aging or poor quality bulb. What happens is tungsten from the filament gets deposited on the glass envelope. It acts as a filter and cuts light output. In real bad cases you can see it as a gray/black film on the glass. In not so extreme cases you can't really see it with the naked eye, but it is there and that is a reason to never compare old and new bulbs for manufacturing quality. An old bulb that has burned for XXX hours is going to be at a disadvantage in light output.
I could sell you some quality German manufactured Philips/Narva 55 watt H3s for $5 each but the shipping would probably be 4 bucks for just a pair. See what your local auto store wants for a pair of the same or Osram/Sylvanias. Stay away from junk bulbs.
|