Quoted from djblouw:So, it's looking like the aux lamp board has a address issue. It's either coming one of the chips has failed, or it's not getting the data correctly. The first would be remedied by a new aux lamp board. The second would be by re-pinning the connectors, and reflowing the headers.
New aux lamp board is on its way. I'm feeling comfortable re-pinning connectors now, just waiting on a shipment. You lost me at 'reflowing the headers' tho