Checked all fuses and back up lights don't work.

Asked by May 05, 2013 at 08:49 PM about the 2003 Ford F-350 Super Duty Lariat Crew Cab LB 4WD

Question type: Maintenance & Repair

3 Answers


Check the sub-connector harness which is to the rear of the spare tire. There may be a loose connection there. Best wishes! -Jackie

2 of 2 people found this helpful.

Have you checked the bulbs? Slap a new bulb in one side see if it works. Start simple.

1 of 1 people found this helpful.

There is a simple switch on the transmission that sends power to the reverse lights. Check the reverse bulbs sockets for power. If no power, check for power coming out of the switch.

3 of 3 people found this helpful.

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