Quote Originally Posted by Kustom Jim View Post
I fitted electric sender gauges last year and discovered that they needs very stable voltage. I fitted a 10 volt!? stabiliser (I think) off eBay to the power feed for them and bingo they all worked including oil gauge, just takes a while for needle to wind up

For example on the official Smiths gauge website it has this requirement in the small print!!!

You can make one in about 10 minutes with a few capacitors, an LM317 or a LM7810.
Saying that I have plenty of free time, anybody need one, or a few dozen made?