Re: Blackened bulbs is when so much of the wire (archive)

Cleaning electrical contacts is really the best reason I have for my desire to take my car apart piece by piece. She would be like new when all parts are cleaned and repaired/replaced. Another 20 years of life!

has evaporated and condensated on the inside of the glas of the lightbulbs.
Yet miraculously they still work.
It's just my own term for it.
Also please note that they are lightbulbs in other places, which will suffer from the same problem. Inside switches.
You also have to consider the "plastic see throught bits"(stencil). The would be dirty. So Q-tips and allohol are handy. (Don't use any other cleaners, not even petrol) Allohol is usually a very safe bet, it won't desolve anything but once's brain:).
Also worth considering, are voltage drops on delivery.
That is quite common and every contact and joint is a candidate for it.
On cars so old(be happy it ain't a Ford), oxidisation of copper has well progressed.
Every contact can potentially burn up the electricity and get warmish.
So why not take this light switch apart and give everything a good clean and refresh with a proper contact spray. I would turn my attention to the coil which acts as a resistor for dimming the dash lights. That thing moves inside the switch when you turn the knob outside.
Best Regards
Ralf

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