Good info regarding cleaning the switch and/or the HI relay. Very useful wiring diagram. Thank you.
What prompted me to follow this thread was to not only replace my standard headlight bulbs with LED headlights but my left side low beam was out. Months later, the left side high beam went out. So now I knew I'd be replacing headlight bulbs. When I installed these Evitek LEDs I never thought to test them. It's possible the left side high beam was defective... or I may have damaged it. You see, last night when I finally got everything inserted properly (including the spring clip), I was struggling to route the wires to connect it. At one point I turned the handlebar and the wiring must have snagged on something because the left side Evitek LED unit got yanked out. Thankfully the plastic nubs which holds it into place didn't break off since I was able to reinsert it and lock it back into place. Did I damage it? Unknown. After spending countless hours last night installing them... the last thing I want to do now is remove them.
Cleaning the switch and/or checking the HI relay seems to be much easier.
BTW, today was my first ride of the season. It's been a long/cold winter here in the Chicago area.