My dads '92 legacy wagon has no high beams.

 

He has:

-Replaced harness going to each bulb, as the old ones were burned pretty badly

-Replaced both bulbs, including having the parts store guy bring a new one out, plug it in, and see that highs don't work. I can ohm each bulb out and see that both filaments are good.

-Replaced both relays (and I can hear both click on/off)

-Replaced the turn signal/light stalk in the column

-ohm'ed out the fuses under the hood, and they are both good

 

The high beam indicator on the dash does come on when it's supposed to. Low beams work fine, but turn off when pulling or pushing on the light stalk.

 

The odds are pretty low that the light switch he pulled from the junkyard had the same exact problem as his.

 

Looking at the diagram here:

http://main.experiencetherave.com/su..._diag_(US).zip

 

if there is a break in the Red wire at connector F44 (right side of page), I believe that would prevent the highs from getting a ground, while allowing the dash high beam light and the low beams to work. Does anybody know where this connector is?

 

Some other posts referenced a 'dimmer switch'. Does this have anything to do with the headlights, and is it separate from the switches in the column?

 

Any other ideas? His car has 365k miles on it, and this is turning into quite the annoying problem.

From what I can tell F44 is going to be under the hood. Drivers side, on the firewall. Somewhere in the vicinity of the brake booster/drivers side strut tower. White color, 8 pins.

The trouble you are having is most likely due to a connection problem to ground running to the light switch as you suspected. You can pin point the trouble area by grounding the wire going back to the light switch. It should turn on the lights when you have the switch in the on position if the path back to the lights is good. If that wire is the trouble and you have too much trouble finding the trouble spot you could run a bypass wire between the two locations and bypass the trouble. Not the prefered solution but it will work. It is very likely the trouble is within a connector and by simply disconnecting and reconnecting it the trouble may clear.

Thanks for the replies. The car is now 5 hours away, but I'll call my dad and let him know where to find the suspect connector.