I have a 2000 Subaru Outback wagon. Recently, the passenger-side daytime running light and low-beam headlight stopped working. When I got out of my car to check that the headlight was out, I happened to bump the front of the headlight casing and — lo and behold! — the headlight came back on. I opened the hood and tried to see if any wires were loose, but it did not appear so, and tugging on the wires does not cause the light to go on or off. So now, whenever I start the car and the headlight isn’t working, I simply get out and give the front of the headlight casing a bump — Fonzie-style — and that usually does the trick (sometimes it takes two or three whacks for it to stay on). What could be causing this, and how can I fix it? — Steve
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