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Air Ride Suspensions \  Pressure Switch Question - How To???

Pressure Switch Question - How To???

Air Ride Suspensions Q & A
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hugofirst   +1y


Hi Guys, Ive got a Furnas/Siemens 69MC8 Pressure switch for my minitruck..

I got the switch 2nd hand and im not 100% sure how to hook it up!

Its got 4 connectors.. Two 'Line' and Two 'Motor' connectors..

Then down on the pressure switch cassing - it has two Earth bolts.. Which im not sure if their needed or not.. (looks like their whats used to mount the switch to a bracket of some sort...

Anyways, Ive got TWO compressors that I want to run off the one switch..

Im guessing I need a Power from the Battery (to the switch), a power going to each compressor and an earth..

so WHAT is 'LINE' and whats 'Motor??

The switch I have looks exactly like the one at the top of this website: http://www.wilsonelectric.com/furnas.htm

You can see the 4 connectors up top.. Then down on the shell casing you can just see two Blue coloured screws that have an Earth sign next to them..

QUESTION: How do I hook it up?

any light on the subject would be great!

Thanks heaps!
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