Hey guys,

Posting for my dad again.

He has a '94 Toyota 4wd truck (that he bought about 2 months ago), regular cab, 4-cyl. The high beam headlights do not work. We replaced on headlight to make sure that by chance both high beams haven't went out. Well we replaced on side and it still didn't work on high beam.

Does it sound like an issue with the dimmer switch or something else?

Thanks!

 

Usually the contacts in the combo switch https://www.yotatech.com/forums/f199...l#post51724567 just need cleaning. Here is how I fixed mine.

 

Yes, sounds like contacts like Terry says above.

High-beam flash works?

Got multi-meter?
Got schematic of your light system?
We'll go from there.

Happy New Year, guys!

 

Interesting I wonder if the fact my lights are always on it keeps the contacts cleaner??

As I never had this issue yet

 

I do a lot of night driving and never had this issue with low beams, just a high beam issue. Not sure why. One thing I do think causes some problems is these trucks were designed for the normal headlight and most install Halogens. In my opinion, the Halogens draw more current and cause some carbon/arching/????

 

Not that the OP has that but
wouldn't the quoted problem be eliminated with an aftermarket headlight harness?

 

H4 conversion harnesss would surely help minimize arcing/pitting of the switch contacts, aside from minimizing power loss on the wiring.

Look at how much current flows through the high beam contacts, especially when the off-road version (100-Watt highs) are used.