Short Wave Sportfishing wrote:
On 21 Nov 2006 04:28:26 -0800, "bobk123"
wrote:

Short Wave Sportfishing wrote:
On 20 Nov 2006 19:26:53 -0800, "bobk123"
wrote:





Ok, so I assume you removed the sender and checked it - good. Now
that wire run should be duplicated on your boat in exactly the same
way you tested it. The way you would do that is to ring out the wires
from the gauge to their termination points at the tank. Find the power
leads and that should be that.

Greenwire is normally associated with ground in AC systems, but not DC
systems. I assume that your 16 foot boats is probably all DC and no
AC available. So my thinking on the issue is that you need to find
the black ground wire, or just rewire the gauge/sender as you tested
it and just disconnect anything you can't readily identify from the
tank. That extra wire could be a work around for some other accessory
on the boat that was removed, but it could be an active ground.

I would just ground it to whatever point is closest on the engine
block.


Yes, the boat is in the water only about 5% of the time. I think the
sending unit will work once I ground the fuel tank because the sending
will then have a ground instead of the +12 volts. I'll attach the
green wire to the engine block first and see if the sending unit will
work. If not then I'll rewire as you suggested. Thanks all for your
help.