I replaced the headlights on my 92 areostar, one was out and the other weak. Once I got the 2 new headlights in both normal and highbeams were hightbeams on the lights, but on the dash the high beam light goes out on normal headlight, but it still high beams outside? any ideas Thanks for any help

 

Flash-to-pass switch stuck on high???.

 

I'm sure whether your 92 has seal beams or the 9004 halogen type bulb, you can not connect the plug incorrectly. This means that either you have a short between the low and high beam power circuits or, as aerocolorado indicated, you have a stuck flash-to-pass switch. But, it seems to me that if the flash-to-pass switch were stuck, then the high beam indicator light would stay on also.

Just a thought, since one headlight was out and the other was weak, are you sure that they are on bright all the time? Do you notice any difference at all when switching from normal to bright lights?

Ron

 

Check your new bulbs, too. If there is a broken filament shorting both the high and low beam filaments together, it will probably cause the other headlight to burn on high as well.

Cheers,
Eric

 

The only diagram I have is called "Typical headlight circuit wiring diagram" from the Haynes manual. I have found errors in their wiring before, so here goes:

The highbeam indicator is tied to the same line that provides power to the headlights. So if the hightbeams are on the dash indicater must be lit. I can't see the flash to pass sticking causing this.

I wanted to ask how you determined that both low and high are on. Are you judging it just my looking at it?

If you want to know for sure you should check the power at the light socket pins. You should have power on the Light Green/Black if the highbeam are on and on the red/black for low beams. The Black wire is ground. Check those and go from there.

 

After checking it again tonight, the high beam light on the dash now does stay on all the night, pass, normal, high.

 

OK. It could be the "flash to pass" switch stuck. That would still seem odd that it stuck just when you changed the headlights.

It's also possible that there is a shourt across the two pins on one of the new bulbs. Try disconnecting each, one at a time and see if that fixes it.

There are probably a few other places where things could be shorted but I would start with anything that changed when the problem presented itself. Thus the new headlights would be at the top of my list. Give it a try and let us know what happens.

 

You haven't said if you have seal beams or the halogen bulb..If the bulb be sure that you use the 9004 bulb and not a so-called replacement.

Ron

 

Dj300ford,

Any update? I'd love to hear that you figured out the mystery.

 

Dj300ford,

What's your status? Fixed or still blinding oncoming traffic?

Ron