same problem, fuse ok, 10 bulbs ok, left boot two connection ok.
I have opened the plastic case that contains bulbs (first
with cutter i have removed the mini plastic lids, are 4 each bulb) and inside was oxidized. There were two bars of 3cm (plug 90°) and two metal strips behind bulbs and i have brushed the small zones between bar/strip and bulb/strip.
Now third stop is working
wind, February 2009