Mercury Autoblend system--how work?

Coogie

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May 13, 2009
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I have a Mercury Autoblend on the fuel line to a Force 120LD91D on my recently acquired 1991 22' Bayliner Capri.

I see that the Autoblend unit has a 2-pole screw-on electrical connector on it, but nothing is connected to it! This boat has certainly been worked on (over?) by multiple parties, but is it OK that the unit has not electrics to it?(that is, does it work non-electrically, and the connector is for an alarm or something). Or do I need to find what's supposed to be plugged into the unit?
 
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