Couldn't you attach the three wires together?
sounds like a strange monitor:)
>
> Greg Alexander
> http://www.cia-g.com/~sietch/
> ----
> Anyone who cannot cope with mathematics is not fully human. At best he is a
> tolerable subhuman who has learned to wear shoes, bathe and not make messes
> in the house.
> -- Lazarus Long, "Time Enough for Love"
>
Regards
Robbie