On Saturday, December 27, 2014 1:39:50 PM UTC, David wrote:
I am trying to fault find a fluorescent light on the 12V circuit in our
motor home.

Opinion seems mixed, but there are several postings which claim that these
are actually 240v AC lights with a built in inverter so that they can run
off 12V.

There is certainly a lot of circuitry inside.

Firstly, do camper/caravan/boat 12V fluorescents usually run at 240V with
a built in inverter (or sometimes)?

Secondly if so is there usually clear marking of the 12V and 240V parts?

I don't particularly want to probe a 240V AC circuit with the 50V DC part
of my little multi-meter.

Cheers

Dave R

--
Windows 8.1 on PCSpecialist box

http://donklipstein.com/f-lamp.html it`s in there somewhere

but

LED is going to be better all round, 12V LED tape will live happily up to around 15V and there is a variety of driver modules and star mounted and COB LED packages around to retrofit existing fittings.
You`ll get more light for less battery drain.