Headlight switch ?
I'm a newbie to this site and this may seem like a real stupid question, but here goes.
I recently acquired a 1992 Celica convertible and was noticing that I have 4 positions on my headlight switch. #1, #2, #3 and #4. #1 is off. #3 is parking lights, #4 is headlights. What is supposed to come on when I switch from off (#1) to #2? I looked at the Haynes manual that I have and in the wiring diagram, it calls it 'hold' and says that D and U should be energized. What are D and U. The only thing that I can figure out is that if you turn the headlights on, then turn it back to #2, the headlights go off, but they don't close. Any help would be greatly appreciated. This is driving me a little batty.
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