[FED 387]

Joe--same bulb for stop & turn & tail lites( 1157 bulb in it) bulb is in correctly too----the clearance lites (all of em) flash when you turn on either the turn signals or emergency flashers---the stop/tail on the trailer works but they are dim--the stop lite on the roof of the cab(2000 Ford Super Duty) flashes too---the clearance lites work great UNTIL you turn the turn signals on have not tried it with the brake pedal did not think of that---seems to me that there is a ground wire thru the plug ---maybe climb under the trailer see where it ends up and if the ground there is bad to clean it off or drill a new hole---well I'll look at it tonite--thanx for the ideas will try a seberate battery test each circuit see if I have a bad wire someplace--thanx Comp387