driver's side low-beam headlight not working 1990 Loyale

[wartdanny]

Good morning kind Subaru drivers-

So I've found that all of the folks flashing their high-beams at me as
I drive to work were NOT telling me of an upcoming speed-trap -
rather, my driver's side low-beam isn't working! I replaced the bulb,
but to no improvement; even with a new bulb, the low-beam doesn't work
on the driver's side (note: passenger side low-beam and both high-
beams work fine, as do all other exterior and interior lights). I
checked fuses, and they're fine. So by process of elimination I think
it's the headlight relay. Can anyone a) share their thoughts on this
assessment, and b) if it is a relay, advise me on where the heck to
find the thing?
Thanks!
DW

 

[johninKY]

Located directly behind the instrument panel there is a row of 4 or 5
relays. Not easy to get to. But before going down that road, test for
current at the light. Unplug it with it on and see if any of the wires
test hot. Find a hot wire then the problem is in the ground somewhere.

 

[Carl 1 Lucky Texan]

Located directly behind the instrument panel there is a row of 4 or 5
relays. Not easy to get to. But before going down that road, test for
current at the light. Unplug it with it on and see if any of the wires
test hot. Find a hot wire then the problem is in the ground somewhere.

What he said. You wouldn't be the first to find a bad/corroded ground
causing the problem.

Carl

 

[wartdanny]

Thanks John and Carl for the helpful comeback -
I found another spare halogen bulb in my toolbox, thought, what the
hey, and gave it a try - and everything works. So - maybe my previous
"spare" (which was in an opened container but looked brand new, even
the gasket wasn't dirty) was a previous burn-out... or maybe a bad
connection (I hear corroded ground) was moved enough during my
replacing the new bulb. Either way, I really appreciate your help and
will have a plan of action if it happens again! I'll post again if
anything develops, for general edification.
peace-
DW