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Terry @ BMS Terry @ BMS is offline
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Join Date: Jan 2008
Default 06-20-2018, 11:07 AM

The orange wire on the PI controller should be connected to turn on a relay to fire up the WMI pump. There is no FSB involved, you'd remove that all together.

But if you were to use an FSB you have it all backwards. Orange FSB wire is what controls pump. Blue FSB is the signal wire that is no longer used. Orange wire has to be in spot2 on DB25.

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