Terminals on the back of the HD Switch—Do NOT Touch!

Every so often we have a customer call, like Mr. Kelly who had bought a new 5th wheel, that came with our Drain Master valve system, as a standard feature with the Drain Master switch. He discovered that the factory had either mislabeled the switches or connected the Gray Switch to the Black valve.drain master switch

Drain Master Switch Front

Frustrating….. but a simple matter of changing the labels (not so easy, or available, if damaged). Or you could change the plugs on the wiring going to the valves. These plugs are either a

4 pos plug

4 pin flat plug, or

2 position switch plugs

 2 ea. 2 pin plug

These plugs are located about 12″ away from the switches themselves. This option is about a two minute process IF you know they are there.

If not the next logical thing to do is remove the Sta Con terminals on the back of each Drain Master switch and reinsert them on the other switch.

hd switch side view

 Not so simple as you now have 8 terminals on each switch, which means you have 16 wires with terminals on the end. (Some of the Sta Con terminals have 2 wires in them.)

The other option is to remove the belly pan, the big sheet of plastic sealing the underbelly of the coach and change the plugs near the valves. This is not a good option because the pan is very difficult, if not time consuming to remove and reinstall.

So to sum it up, NO it is not good to remove the terminals on the back of the Drain Master switch.  But if you already did, simply give us a call, and we will try our best to help you get them put back where they belong and get you on your way.

Do you have questions about the Drain Master switch or RV plugs? Leave us a comment below!

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