I grounded the sending wire and the needle went all the way to empty
from all the way full with about 1/4 tank of gas (verified through the
snding unit cover). I then jumped the sending wire still installed to
the gauge to the +12V side and the gauge started to flutter slightly in
the empty position moving very fast but not far. I also hoooked up the
meter from the sending unit to groung and rocked the boat to see if I
had resistance #1 and #2 to see if resistance changed while the fuel
was moving. It appears the sending unit is good. From what you told
me I expect it is the gauge that is faulty

Bob
Jim wrote:
"Robk1013" wrote in message
oups.com...
The panel lights all work, I had the boat out last night. All fuses
check ok. I am assuming the gauges has the feed from sending unit, a
12 volt source and a ground
Jim wrote:
"Robk1013" wrote in message
ps.com...
Has anyone had a similiar issue with gauges not working, both the fuel
and temp are not working. I do have a meter and looking for a few
troubleshooting techniques.

Thanks

Robert

Most of that stuff is daisy chained. Hint: The panel lights and
instruments
usually share the same grounds. If the panel lights work on those gauges,
the problem is most likely with the +12v.
Jim

It just occurred to me that you may be powering your panel lights from the
ignition switch. In that case the gauge and panel light hot wires are
probably joined together. Why don't you try grounding the sender leads at
the senders. They should peg the meters. If nothing happens try again
grounding the sender wires at the back of the meters. Careful, there's 12V
there.
Jim