Re: Sealed Beam Headlights
I haven't run into that problem, at all. In the 66, I have aircraft landing lights in the high beams and auto parts lamps for the low beams.
Back in the 70's, I was buying NOS headlamp assy's from passenger cars just to get the new T3 bulbs. Even then many would fizzle immediately when turned on. It all depends on how well the glass was sealed when new. Some only lasted a year, others lasted many decades.
As far as trying to seal the glass around the connectors, that's a little like closing the fence gate after the horse ran away. If air entered the lamp in the last 40 years, sealing them today means nothing. The damage is already done and you may as well power it up to see if it's still working.
I see no advantage to warming the lamp before testing. These things can sit outside in Intl Falls, MN in -30* and work perfectly when turned on.
I haven't run into that problem, at all. In the 66, I have aircraft landing lights in the high beams and auto parts lamps for the low beams.
Back in the 70's, I was buying NOS headlamp assy's from passenger cars just to get the new T3 bulbs. Even then many would fizzle immediately when turned on. It all depends on how well the glass was sealed when new. Some only lasted a year, others lasted many decades.
As far as trying to seal the glass around the connectors, that's a little like closing the fence gate after the horse ran away. If air entered the lamp in the last 40 years, sealing them today means nothing. The damage is already done and you may as well power it up to see if it's still working.
I see no advantage to warming the lamp before testing. These things can sit outside in Intl Falls, MN in -30* and work perfectly when turned on.
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