Draw Tite 5504 Activator IV Brake Controller-22457 from www.sturdybuiltonline.com The cause of this is most likely a the blue wire supplies power from the controller back to the trailer connector and to the brakes.4.4/5(9). Electronic trailer brake control for 2, 4, 6 & 8 brake systems. Brake controllers & wiring adapters.
This install was done on my 2005 gmc sierra 1500.
Read electrical wiring diagrams from negative to positive plus redraw the routine as a straight range. Brake controllers & wiring adapters. A great progressive brake controller for trailers. As the control is rotated up more power will be available to the brakes when the brake pedal is pressed or the manual control is used.
