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Everyone with a car should be checking their signals at least once a week.
Park near either a reflective surface or close enough to a wall that you can see the lights individually. Apply your brakes make sure all of them light up, turn your signals on and make sure front and back on both left and right side flash, with emergency brake applied go into neutral and take your foot off the brake to make sure your reverse lights work, test your high beams and fog lights.
What happens if you don’t hear the first of three short grunts? Does one of you wonder why the other one is naked when they really just want a burrito?