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Old 07-27-2013, 08:37 PM   #1
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Wiring help

I have a 1989 Holiday Rambler Aluma-lite 27 foot ford E350. I am Trying to change the control panel over the door. This panel contains the tank monitor computer and switches for the water pump and water heater. I bought a system from Tank-Edge systems it contains the level computer and the switches. I also have a pump switch in the bath. So for the water heater switch works. But the water pump switch has 3 contacts and I transferred all the connectors from the old switches. If the pump in the bath is on the pump will not work with ether switch. Are the two switches wired like a home 3 way switch? If anyone has a electrical schematic of the system i could use it because i have at least 4 wires i know nothing bout.

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Old 07-27-2013, 08:44 PM   #2
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They use a thing called monoplex controller. Nothing at all like a three way switch.

You will find all of the switches to me on the same loop of small guage wire. When any of them is pressed it changes the current state of the monoplex relay to the other state via a latching relay. on to off, off to on.

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Old 07-27-2013, 08:55 PM   #3
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It should be wired something like the diagram balow.

1995 COACHMEN Santara 350FL on a 1994 Ford F53
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Old 07-27-2013, 09:01 PM   #4
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I should have looked more closely at the year & model of the RV.

Long day!
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