In this photo we are looking at a Moeller, used to be Tempo, mechanical fuel sender with an electronic conversion capsule installed. If you look closely you will notice the red pointer of the mechanical gauge pointing to 9:00 or approximately 1/4 of a tank.


The nice thing about these mechanical senders is that regardless of whether the electric fuel gauge is working or not you can still see your fuel level by simply looking at the mechanical gauge. A smart fail-safe design.


To test the conversion electric capsule simply connect the DVM to the two leads coming out of it. Polarity is not important here. This is a perfectly acceptable reading for this sender and it is working correctly.


NOTE: You do not test this type of sender by referencing ground at the flange like you can with the El Cheapo type. The capsule is electrically isolated from the tank.