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Old 01-05-2016, 04:20 AM   #10
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Join Date: Sep 2014
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Default Re: Espar D4 High Altitude Pump

Seeing that the High Altitude Compensator is wired between the Heater Control Unit and the pump, my guess is that the Compensator is only modifying the duration of the pulse, not the frequency. It does have a little light on it that blinks every pulse. If it would be useful, I could record it in action.

Here's a link to a PDF that describes it.

It is literally a little black box.

Perhaps after you get this working, you can build an Arduino pacemaker?
2005 Dodge Sprinter Westfalia by Airstream #63 in Jasper Blue
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