Andy Burns wrote:
Jon Parker wrote:

Does that all make sense?
Even assuming you've got a 'free' 12V battery, what you spend on 3-way
switch, 2x sockets and a weatherproof enclosure will probably cost more
than occasionally running the car and plugging the air pump into the
cigar lighter ...

Or running mains power to the garage (if not there already) and
getting a 12v power supply.

--
Chris Green
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