testing voltage regulator

Howdy

I am trying to find out how test the voltage reg on my SIII (petrol). I found the following video:
Voltage Regulator - How to Test - YouTube
is this how it is done on series LR? not very clear and against other videos that say check the voltage on battery before and after pressing gas pedal.

there was an earlier post also:
http://www.landyzone.co.uk/lz/f6/voltage-regulator-series-111-a-72353.html
which I read and could not make head or tail from.

How do you test a voltage reg?

thanks a bunch in advance

First make sure it earth is good (remake the earth)
if still no good read this Land Rover FAQ - Repair & Maintenance - Series - Electrical - Guages - Guage Basics

As stated, check/remake all earths (I often bodge a temporary wire back to battery neg while testing). The light green wire from the stabaliser to the gauges when the ignition is on should come on at 12+V for a while (up to a minute if the regulators a bit slow) and then after a while should start to go on and off fairly steadily once a second or so. I've had working ones that go on and off more rapidly than that and slower than that.

chuck it and change it for a digital one.