I don't know. It means that it is working, but whether it means it is
working correctly in conjunction with the signal from the sensor I could
not say.

I know when my 1983  Westy sensor wire came loose in the engine compartment
when I was on a long trip and trying to escape an oncoming tornado on the
Gulf Coast, its coming loose caused the gauge to immediately swing to the
right and blink like crazy which made me think I had cooked the head, which
had happened the previous time I saw it swing to the right and blink like
that. It taught me to take such things less seriously. Don't recall if it
was free or grounded, was focused on other stuff.

Jim

On Sun, Aug 12, 2018 at 1:18 PM Dan N <dn92610@gmail.com> wrote:

> yes Jim,,,
>
> it's a mystery for me too... it supposed that the 700Y voltage regulator
> is for both gas and coolant temp gauges but the gas gauge is working and
> the temp gauge is NOT...
>
> now a question if I may... when I ground the sender wire, the coolant
> gauge needle went to the max with a blinking light... - does it mean that
> the coolant gauge is working good? or does a bad gauge could doing that too?
>
> thanks
>