I think there's a wire swap going on?
If the right-side GI's work, but you think the wire hanging out is the right GI, then it must crossover somewhere coz the right GI's wouldnt be working, yet the left GI's don't work.
I'd have to say that 'right' wire(as you think) will bring the 'left' side back to life.
MM
While you are a bit left field on this one, it actually does sound about right.
