Well the fuse itself is not going to cause a problem. You have something corrupted on that ckt.
Answer these questions & begin the ghost hunt:
Are your lights factory, or FUBAR Moded?
Is there corrosion on the ckt wiring (possible water damage, unscrupulous dealerships love to take flood damaged cars from hurricanes & what not & push them off to other parts of the country for some unsuspecting sucker to pay full price for)?
Did some homebrew electrical wizard tie some garbage mod into this ckt?
In short (maybe literally) you've got something screwing up that ckt if everything is running fine with the fuse pulled.
Good hunting.
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