Update
Dave,
I still don't have a good answer. But I looked at a diagram for a Freightliner chassis ... jees, you guys have more lamps than a porcupine has quills!
I see there are fog lights, with a dash switch, wired just like I described, with green wiring.
I see there are "driving lights", with a dash switch, wired similarly to above, but with various red & blue wiring.
THere is something called "work lights"(?). These are wired direct from the coach battery fuseblock (15 amp). There is no relay, nor switch on the dash. I can only assume there is a switch on the lamps themselves?
Does any of this ring any bells?
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