Jensemann23
New Member
My fuel gauge has been reversed since the boat got new gauges in 2010. Is it possible to reverse the sending unit in the tank?
Fuel gauge reversed, Sea Ray 215EC 1996
- Thread starter Jensemann23
- Start date
Express 390
Well-Known Member
- Sep 14, 2018
- 661
- Boat Info
- 1986 SeaRay 390 EC
1993 SeaRay 290 DA single 7.4 /Bravo 2
1992 SeaRay 230 DA 4.3LX Alfa drive
- Engines
- Twin 454 Crusaders inboards 4 blades
Try reversing the leads at the back of the gauge that should do the trick!
Jensemann23
New Member
Tried that, same result.
scoflaw
Well-Known Member
- Aug 10, 2011
- 6,395
- Boat Info
- 1999 Powerquest legend 260 sx 502 mag
2005 Baja 242 islander 496
- Engines
- 502 mpi Bravo 1
496 mag B1
There's only 2 wires, shouldn't be that complicated.
Jensemann23
New Member
Yeah, but I switched the two wires, and the gauge still reads reverse. So I think changing polarity doesnt work
If you're saying that all of this started after a gauge swap, then go through and check the connections on the back of the gauges as that makes the most sense as to where the problem lies.
Other than that, it could be a bum gauge, but... a fuel gauge reads "full" if there's a short. Meaning, if the pink and ground wires are touching, it will read full - in fact, the needle will "peg" full.
The access to the fuel sender in your boat is super simple - VERY easy. Check the connections there, too. In the end, as Scoff alluded to, this is a dirt simple system so don't overthink it.
Other than that, it could be a bum gauge, but... a fuel gauge reads "full" if there's a short. Meaning, if the pink and ground wires are touching, it will read full - in fact, the needle will "peg" full.
The access to the fuel sender in your boat is super simple - VERY easy. Check the connections there, too. In the end, as Scoff alluded to, this is a dirt simple system so don't overthink it.
Chip S
Active Member
- Jun 17, 2019
- 432
- Boat Info
- 1993 Sea Ray 200 Overnighter
- Engines
- 2023 Mercury 150 hp Four Stroke Outboard
The gauge measures ohms at the sender. The American Marine Sender specifications are 240 ohms for Empty and 33.5 ohms for Full. The European Marine Sender specifications are 10 ohms for Empty and 180 ohms for Full. Since you are in Norway there is most likely a mismatch between your gauge and your sender. Either the sender or gauge will need to be replaced. Does your gauge have "E" for Empty and "F" for Full (American) or an empty circle for Empty and a full circle for Full (European)? Most likely changing to the opposite of what you currently have will fix the problem. Faria has a good instruction sheet at https://fariabeede.com/site_manuals/IS0085d.pdf .
