There are two main types of breakaway cable, those with a karabiner clip attachment and those with a spring clip attachment. A cable with a spring clip is designed to be hooked back over the breakaway cable when it is fitted to the tow vehicle and must always be used this way. A cable with a karabiner clip is designed to be secured onto a mounting point on the tow vehicle. The karabiner does not need to pass back over the cable but can if necessary.
Fixed Tow Ball Systems
The cable with the spring clip should be looped around the tow ball neck and clipped back on itself.