In article ,
ml wrote:
not really familiar with this stuff, thought it would be simple but i
got stuck

I have a preamp (low power) it gets 12v and i have a power supply
also 12v(DC)
i bought a lighted toggle/rocker switch lighted from radio shack
my goal was to just have the switch turn on/off the amp and light in
the on position
the switch has 3 legs labled
gnd
load
power
sounds simple, but seems something is not quite right
I assumed gnd was ok to tie everything to
so i have gnd from preamp gnd from pwr supply and i connected to gnd
on the switch
i assumed load was supposed to goto the pos on preamp
and power whent to pos of the supply
blew fuse i think power also switches to gnd or something i
dunno
anyone have experience with this type of switch from RS and how to hook
it up?

What is the rated power output of the power supply? If it's a small one
only feeding a pre-amp it likely can't drive the 5 watt or so lamp in the
switch. Which could take over 500mA at switch on. A better choice would be
an LED - only about 20mA or so.

Generally car stuff like this isn't too concerned about efficiency.

--
*Why are a wise man and a wise guy opposites?

Dave Plowman London SW
To e-mail, change noise into sound.