One fog light will not go on unless I tap it with hand.

Wallichtj

New member
Just noticed today that one fog light will not turn on, unless i tap it. Could this be a loose bolt or just time for new bulbs?
 

Try moving the wires around.. This used to happen to fog lights I had on my car, it ended up being a loose wire.
 
Check for a good ground (secured tight to bumper with good metal to metal contact (not paint to paint or metal to paint).

It could also be a bulb filament that's busted, but tapping brings it back into contact and lights up. Not likely, but it does happen.
 

Could be anything from the bulb, connection to the bulb, wiring or as above bad ground. I'd start withthe easiestly accessed and move into the bulb.
 
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