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Old 09-11-2011, 03:57 AM   #1
HoosierDaddy
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Default Tag axle switch

The wiring on my leveling system was all messed up when I bought it. I am trying to figure out the wiring schematic for the tag switch. It appears that current from the switch activates the lowering valves on both axles (they are wired together) and a seperate air valve blocks the air supply to the tag manifold. I cannot see how this would work unless there is a diode installed in the harness to prevent the main axle lower air valves from opening. Can somebody help me by explaining how yours works. I have talked to Newell ...they have sent schematics to me but the tag axle is not included and the wire colors on their sheet are not the same as mine...I have had to trace each one out....It seems to be leveling properly now.
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Old 09-11-2011, 02:44 PM   #2
Richard and Rhonda
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Dean,

Do you have one or two six packs for the rear setup. If you have one, then look at the post under suspension for the schematic that Steve Bare posted. The key to understanding the one six pack setup is that the valves actuated by the tag switch are three way valves. When actuated they isolate the tag from the drive via the three way nature of the valves. Look carefully at the schematic with that in mind. Best I recall the up and down three ways are plumbed backwards from one another.

Another key finding by Steve was that the tag surge tank in the rear is actually bifurcated (two tanks in one that looks like one tank on the surface). That's how the right and left tag operate independently.
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Old 09-11-2011, 04:57 PM   #3
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Thanks Richard,
I have two 6 packs much like the pic that Michael posted. Both 6 packs are appear to be identical.
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Old 09-12-2011, 02:16 AM   #4
Richard and Rhonda
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Can you scan and post the schematic that Newell sent you?

So let's noodle through this. When the coach ignition is on, and the switch is in the travel position, both sets of travel solenoids are energised and hence open, allowing air to pass from the HCV through the six pack and into the air tanks and onto the air bags.

If the switch is in the leveling position, both sets of travel solenoids are deenegized and no air passes.

So the tag axle switch on a two six pack set up has to deenergize the travel solenoids and activate either the raise or lower solenoid depending upon the position.

Do I have that right?
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Old 09-15-2011, 02:35 AM   #5
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Thanks for the response Richard...This ones got me puzzled. If I wire it so the auto-level works the tag switch wont work properly. The wire colors and the solenoid layout is different from the schematic I got from Newell as well as HWH. I need to spend some time with it when I have someone here that can push the buttons on the panel.
My tag switch is just on-off . I'm thinking that the tag lower solenoids should be energized and the air supply to them shut off when the tag switch is "on".
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