Ok so I talked to XD yesterday and
@
nguggs
s was right, they asked me to trouble shoot to see what part failed. I swapped the bulbs and both fires up. But.... the original side doesn’t always fire up now. I called XD back and told them as much, when they asked me to swap the ballasts I politely declined as it’s a huge amount of work. Fair enough they said and will be shipping me a new ballast. Hopefully that fixes it, as maybe the problem is with the relay.
A+ to XD for honoring a 3 year warranty when I have about 30 days left on it.