Verify that the hitch ball size of the coupler or actuator (brake coupler) and the towing vehicles hitch ball are the same size. Failure to do this could result in the trailer detaching from the towing vehicle and lead to accident. The ball size is listed on the top of the trailers coupler or actuator. Securely latch the coupler onto the towing vehicles trailer ball. Place a safety pin or lock on the coupler latch to prevent the coupler from opening while towing. If the coupler and hitch ball are the same size but don’t seem to be snug the coupler unit can be adjusted from beneath the coupler housing. Do not over tighten the latch to the hitch ball, as this will cause excessive wear. A snug fit is all that is required. In the event that the coupler or brake unit should become bent replace the coupler or brake unit before towing.
