Question about 1999 Ford F150 Regular Cab
Start by checking to make sure you have the correct size bulbs installed. If they are correct then replace the flasher relay. It is located Front seating area, driver side, under dash, mounted on top of brake pedal. If that does not cure the fast flashing, you may have a bad ground connection or the turn signal combination switch may be bad.
Posted on Jul 06, 2008
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Posted on Jan 02, 2017
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