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Would you like the instructions to test the headlamp switch?
Sorry, I seem to be having problems replying. Not sure if it's my internet connection or what the deal is. I had not realized that your tail lights were not functioning as well. After noticing that, I am tempted to think that it's the actual headlamp switch but not sure that would cause your head lamps to not switch between high and low. I was trying to find a procedure to test that, because Im not really a fan of throwing parts at cars, but I just can't seem to find a procedure to test it.. only to replace it. If you would like to replace it and need to know how I can certainly help you with that, or if you would like me to opt out so someone can chime in, I can do that as well.
Did you inspect the connector on the headlamp switch in the dash and make sure that the connection is good?
did you request a call?
I would replace the headlamp switch. it is fairly inexpensive and responsible for a lot of different things so it would not shock me to find out that it is the cause of your problems.