A bit wordy but descriptive.. 1996 Wellcraft Excel (Coastal 23) Electric gauge at the console shows empty, but the mechanical gauge at the tank is accurate. I have a swingarm mechanical type of sending unit in a 99 gal gas tank. The unit has an electronic 'capsule' that shows the fuel level at the tank and the electric console mounted gauge. I crossed the wires at the tank and the console gauge pegged. Zero ohms or an open was metered between the spade terminals on the conversion capsule. So at this point I am convinced the problem is the conversion capsule. I brought the sending unit to a local marine shop where we installed a replacement conversion capsule. The conversion capsule read a half a tank when the swingarm float was at its lowest point. The conversion capsule read full when the float was at its highest point. Now im guessing that the new conversion capsule may not be compatible with the sending unit or the new conversion capsule is broken out of the box. Both capsules are made by Rochester. There are a few differences between the new and original conversion capsules. The new capsule has red and black wires connected to spade terminals. The spade terminals are directly attached to the original capsule. Also the underside of the new capsule has two small round metal pieces. The underside of the original capsule has a what looks like a black washer looking disk. See pic of original capsule (before it was cleaned up and metered). Any clues?
