Metrage cabling for trailer trucks is electrical cable that is sold in any length according to the customer's needs, not as a ready-made bundle with predefined dimensions and terminations. It consists of several separate, colour-coded conductors which are protected together by a single outer insulating sheath. The colour differentiation of the individual cores is used to clearly identify and correctly connect specific functions such as directional lights, brake lights, marker lights or earthing. This type of wiring is particularly suitable for complete reconstruction of the trailer wiring, for building a new customized trailer or for repairing only the damaged part of the original wiring, when it is not necessary to change the whole harness. Unlike pre-made kits, the meter wiring requires manual installation, which means stripping the ends of the wires and then connecting them to the lamps and the trailer plug.