Question about 2003 Ford F350 Super Duty DRW SuperCab
Have you checked the fuses and dimmer switch? Check the trailers bulbs there is usually one bulb with two filaments for each light, one filament can burn out without causing the other to go. If the bulbs are good you should start at the trailer light connector ( use a test light or voltmeter to test for power at the trucks wire harness first to see if it's the truck or the trailer ) and work your way back to the lights. Clean the contacts on the connector, bulbs and bulb sockets (steel wool and or a can of aerosol electrical contact cleaner).
Posted on Feb 07, 2009
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