VEHICLE DESCRIPTION: FIFTH WHEEL TRAILERS EQUIPPED WITH TEKONSHA OR BARGMAN BREAKAWAY SWITCH ASSEMBLIES. THE SUBJECT SWITCHES ARE BASE PARTS 2011 AND 2011P, AND ARE BRANDED TEKONSHA (2011) AND BARGMAN (50-85-009). THESE MAY BE PACKAGED IN KIT NUMBERS 1026, 1028, 2011-23, 2028-23, 2011P, 2011AP, 20005, 20010, 20015, 20020, 2026, 2026-LB, 2028, 1026-LB, 50-85-200, 50-85-201, 50-85-250, 5061404, 5061406, 5061407, 5061408, 5061410, 5061506, 5061507, 5061508, 5067406, 5067407, 5067408, 5067409, AND 5067410. THE INTERNAL SWITCHING MECHANISM MAY FAIL TO MAKE PROPER CONTACT AND PROVIDE ELECTRICAL CONTINUITY WHEN THE BREAKAWAY PIN IS PULLED. THIS CONDITION MAY RESULT IN NO ELECTRICAL POWER TO THE TRAILER BRAKES IN THE EVENT OF A TRAILER BREAKAWAY SITUITION AND COULD OCCUR WITHOUT WARNING.