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Tiara Open Fuel gauge or sending unit
#1
I am the new owner of a 1995 33 Open. Single fuel tank.... Gas

The fuel gauge is reading empty and I cannot get a full view of the gauge on the tank. (stern side of the tank).

I do see 2 wires coming off of this gauge not connected to anything. No loose wires in sight.

I do see wires going to something on the front of the tank. (wire color matches wires on gauge).

Is there another sending unit on this tank?
Do I need to just run new wires to the sending unit on the stern end?

Any info on this would be appreciated.

Thank you
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#2
You'll need a second set of hands to help figure out where the problem is.

Turn on your ignition switch to energize the gauges. At the fuel gauge, have someone temporarily connect the sender terminal (where the pink wire attaches) pole to ground (black wire). When they do this the gauge should read full. If not, the gauge is faulty or you do not have a good ground or a good battery connection to the gauge.

If that is successful, at the sending unit temporarily ground the the sender lead (where the pink wire attaches). If this fails, you have a wiring problem. Most likely in the ground, but possibly a pinched sender wire.

If all the above works, you likely have a bad sending unit.

The sending unit should read about 230-240 ohms when empty (float down) and about 30 ohms when full (float up).

Good luck and let us know how things turn out. Most fuel gauge issues are a wiring problem associated with the ground between the tank and gauge.

Sent from my XT1635-01 using Tapatalk
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#3
Thank you for the information.
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#4
Just to close this thread..tested gauge and sender.. All were fine.. Found a break in the wire.
Ran a new wire and all works great.
Thankfully the factory color codes where correct.
Thanks for the assist.
[-] The following 1 user Likes Mydiamond's post:
Misdirection (07-07-2019)
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