Why Do Trailer Brakes Come on When Hazard Lights Do When Brake Controller is Installed?

Updated 09/22/2009 | Published 09/21/2009

Question:

i just put on a draw-tite time delay brake controller on a 93 f 250 and when i turn on the hazzard lights the brakes come on? it reads constantly on the controller but pulses the brake. the brake drum wires are separate but the brake lights are ran with the turn signals and flashers. any ideas? thanks

asked by: Chris

Expert Reply:

When towing with Hazard flashers on, the Digital Display may flash with the Hazard Flashers. If the Brake Control is set aggressively, pulsing may be felt in the trailer brakes. A Pulse Preventer, item # 5501, will isolate the Brake Control from the flashers and eliminate the flash/pulse situation.

expert reply by: Robert G