On my trusty '89 745:
On low beams, my passenger headlight is out. On high beam it works. (all 4 lights work in high beam mode) SOMETIMES, after using high beams for a while, the passenger low beam works again, even in low beam mode. But only until I turn off the key.

Is this a: my bulb failure relay?
b: my hi/low switch
or c: something else

and

Where the heck is the bulb failure relay on this car? It's not behind the ash tray with all the other relays is it?

Thanks in advance,

Bob Neumann
'89 745 180K, '95 964 115K, '99 S70 (WIIIIDE turning radius....) 75K