Q. ) The Display shows "OL".
A. ) The Prodigy® detects an overload caused by a short to ground on the brake wire (Blue wire). The Prodigy has to have a complete circuit from the control to the brake magnets to the ground and has to have the proper resistance. Possible Causes:
· Short to ground on the brake circuit wire.
· Trailer has electric over hydraulic brakes.
· Faulty control.
May be an intermitten short in wiriing going to brakes? bg