[Vwdiesel] Glow plug indicator system design?

[Shawn Wright]

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