Called a wire TRACER bumpy :)
I would treat the white wire as being a negative as coach builders even back then used white as negative. Yellow was favored as a positive or switched positive wire. RV wiring nightmares are caused because there is no consensus with the industry. This invites government intervention and regulation and higher costs. Utterly stupid when a wiring standard much like the old, marine, YSC, could be adopted at zero cost. And people wonder how and why our government is out-of-control. Snarf, grumble, snarl.
