Yup, those white wires seem to get missed. I totally didn’t catch my one white one when connecting in new AGMs a couple of years back. You’d think taking pix before the job would be enough, but despite it being white it can get overlooked in anxiousness to reassemble things. Since we weren’t actually using the coach, I didn’t see an issue… until inadvertently finding it hanging free in the darkness of loom country behind the battery tray a year later. And the loose white wire phenomenon has appeared herein before, most commonly after battery work by members wondering where it’s supposed to go.
Glad you finally tracked it down.
Joel