Don't understand Lippert coach step manual
I'm confused by the trouble-shooting instructions in the manual for a Lippert coach step. Can anyone who has dealt with the electrical wiring for Lippert steps provide any clarification?
Step 1 in "Troubleshooting the System" says to measure the voltage at the large red wire at the chassis connector (which I assume is the 4 conductor plug that goes from the coach to the step), first with the step switch ON and then with the switch OFF, indicating that there should be 12VDC with the switch ON, and no voltage with the switch OFF. Their schematic shows the red wire as coming directly from the battery to the connector. How would turning the switch OFF change anything on the red power lead if the switch is on a different lead?
Step 2 talks about checking continuity between the green wire in the plug (again I presume they are talking about the 4 conductor plug) and the chassis ground connection. Their schematic shows 4 leads to the plug, none of which is a green ground wire. I can understand checking the ground, but I don't understand their reference to a green wire "in the plug."
Hopefully someone has been through this before and can point out what I'm misinterpreting.
For reference, I have a 2011 Ventana. I had also posted a couple days ago, under "Need help on strange 12VDC circuit phenomena" concerning the problem which lead me to trying to understand Lippert's manual.