If your highbeams won't switch on but flash to pass still works then you should be able to just clean the contacts inside the switch to restore functionality.
This is probably a good preventative measure as well; for me the problem area was the contacts that are constantly touching each other, they built up enough of a nonconductive layer that instead of highbeams the lights would cut off with the switch engaged.
Tools Required:
1/4 drive ratchet, 1/2 or 3/8" drive ratchet, 10mm socket, 21mm socket, torque wrench; optional breaker bar or puller
1500 grit sandpaper
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dielectric grease
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written writeup:
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LED's
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