Jumper cable

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For other uses, see Jumper cable (disambiguation).
MBTA commuter rail car with U.S. standard head end power electrical connection cables.

Jumper cables are electric cables which connect two rail or road vehicles.


The cables between the locomotive, railroad cars and the cab car or driving van trailer on push-pull trains for multiple-unit train control and the transmission of lower voltage electricity (head end power).


The electrical cables between the road tractor and a semi-trailer or a full trailer or the electrical cables between an automobile and any trailer.

See also[edit]