damn mercruiser alarm wiring

oldfielder

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exMember
Joined
Feb 3, 2006
RO Number
20152
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100
One more thing-
My understanding was that the tan/blue wire connected directly to the thermostat through some kind of a switch/sender.The one for the temp (tan)is connected and works fine. What is the yellow and black harness that comes off of the other side. No diagrams show this wire, or Ihave just not looked carefully enough. The only thing I have seen for the yellow is some kind of master slave (you'd think someone could come up with a better name for that one!)
 
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