[Vwdiesel] Miser's Monitor fulfils Shawn Wright's request Right?

[Mark Shepherd]

What prompted this design was Shawns request to see 4 LED's
on a switch blank.
I decided to totally avoid solidstate circuits with op amps
etc as I feel they are
adding to the risk of failure. I already feel that VW
overstepped the mark with
their little splodges of unneccessary electronics behind the
instrument panel during
the 1970's and '80's. My easiest option was the default LED
on method. This could be reversed using 4 relays but I
thought why bother. People these days are paying fortunes
out for blue LEDs throughout the car...
Maybe colour change LEDs could be the way to go.
I also see no reason why the LEDs cant be supplied through a
single switched +ve...
Mark(TheMiser)UK

Shawn wrote:
Has anyone thought of designing an active glow plug
indicator system
which can actually detect the presence of sufficient current
or voltage drop
through each plug? I'm thinking of a system which could
monitor each plug
independently with an LED for each. If necessary, the plug
could be
powered from a separate relay circuit using a manual switch,
but I'd prefer
the option to use the stock relay, and just have feedback
for each plug.
My knowledge of electronics is rusty at best, but there must
be someone
on the list up to the task? I'd love to see a little row of
LEDs in one of the
spare dash switch blanks monitoring the plugs, and the
option for a
manual switch if desired...

Santa... ? ;-)--
Shawn Wright
I.T. Manager
Shawnigan Lake School