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Old 09-01-2011, 11:13 AM   #3
John Landry
Junior Member
 
Join Date: Aug 2011
Location: Erath, La.
Posts: 22
You may want to check the trailer wiring plug that plugs into the truck. Take it apart and check to see if a wire might have came loose and it is tuching the 12 volt battery charging wire or vise versera. when your truck is hooked up while towing 12 volts is flowing from the trucks charging system to the trailer battery. If this wire is loose in the trailer plug and touching the running light wire your trailer battery will power up the running lights. some where to start !!!!!!!!
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Paw John / Krista
2004, 36TK3 MS
2002, F350 4x4 CC Dually
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