What happens if the safety wire is not properly attached to the trailer's emergency brake?

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What happens if the safety wire is not properly attached to the trailer's emergency brake?

The trailer's emergency brake will not be activated if the trailer jumps off the tow bar without the safety wire being properly attached. In the worst case, this can lead to a very serious accident.

The safety wire must be attached to the car – it must not just sit around the tow ball as the cable must function even if the ball fails.

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