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| Just do it completely outside the system, manually.
Hook shop air to anywhere in the system on the supply side
Find the Tru count boxes and unhook the 6 pin Weather Pack connector.
Use a power probe with a ground connected to the ground in the connector and probe (with a hot wire) each of the 4 other wires in the connector, one for each section (valve) inside the Tru Count box, you are now manually testing each valve.
There's only 4 little MAC brand air valves, a bit of wiring and a manifold inside a TruCount box. | |
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Pro 600 with tru counts again.
