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Old 08-15-2013, 02:29 AM
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natemoen natemoen is offline
Master of XSology
 
Join Date: May 2010
Location: Fargo
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If I remember correct it is basically a thermal contact type of switch. When submerged in fuel it stays cool and the circuit stays open and the light is off. Once the fuel gets low and the sender is exposed it warms and then completes the circuit and the light turns on.

I may not be exact on the details but that is the basic jist.
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1978 XS1100E
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#45 pilot Jet, #137.5 Main Jet
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