Date   : Sun, 29 Mar 2009 22:14:24 +0100
From   : philb@... (Phil Blundell)
Subject: Master Compact Power Connections

On Sun, 2009-03-29 at 21:48 +0100, Ian Wolstenholme wrote:
> There are two sets of blue and brown leads and you can see one set of them
in the first picture.
> 
> What goes where, and what might happen if I do it wrong?

You can't really tell for sure by looking at the switch (unless it has
markings on that aren't shown in the photos).  You really need to do
some tests with a multimeter to figure out which pins are which,  Even
looking at another Compact is not necessarily a 100% guarantee since
your switch might be different for some reason (production change or
field repair for example).

Most likely, you want to connect the two brown leads to the top two
blades of the switch, and the two blue leads to the lower two blades on
the switch (or vice versa).  However, it's best not to guess since doing
it wrong will mean that when you turn it on the switch will present a
dead short across the mains; this isn't likely to do you or your table
any real damage, but you might trip a circuit breaker in your fusebox
and the switch will very likely be destroyed by the experience.

Assuming you do have a multimeter on hand, proceed as follows:

1. Turn the switch off and verify that there is no continuity between
any two pins.
2. Now turn the switch on.  You should find that the four pins now form
two pairs, with continuity between the two pins in each pair.
3. Connect the two blue wires to the pins from one pair, and the two
brown wires to the pins from another pair.  In other words, when the
switch is on, you want the wires of the same colour to be connected
together.  It doesn't matter which way round the wires go.

p.