Hello Scud,
I went the mechanical route with the pressure gauge.
The gauge gets the pressure reading from the oil route to the heads.
I had to source a double banjo and hooked up the oil line from there.
http://www.v11lemans.com/forums/index.php?showtopic=18435&hl=kostarika&do=findComment&comment=196469
you can see the set up in this topic.
I chose the location of the gauge on the in the fairing because the previous owner had installed a switch there.
On start up i get anywhere from 5-30 psi
then on idle 100 rpms around 20 psi
around 3000 rpms around 60
then above 3000 rpms anywhere between 60 - 80 psi
I chose the mechanical way because I wanted a second system to the electronic one.
Plus if I could everything would be mechanical.
Hope this helps.