Dave wrote:
I have to outdoor light fixtures (four sockets) that have been empty
for several years.

They require a long extension ladder to get to them.

I'm afraid that the threads in the sockets will be a bit corroded.
Can I spray WD-40 into the sockets, let it sit for a while and then
install the bulbs?

Thanks,

Dave


Yes you can....And it won't do any harm...

Whether it will do any good is the question...

Prepare yourself for having to replace all the sockets, that may be
easier than trying to get rid of the corrosion they may have suffered.
they're not all that expensive, and when you install the new bulbs go to
an auto supply store and get a tube of "dielectric grease" to smear
liberally on the bulb bases to avoid their bases getting corroded into
the sockets.

HTH,

Jeff

--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
The speed of light is 1.8*10^12 furlongs per fortnight.