The 62-200 LinkMaster™ is our basic wiremapper for identifying wiring and continuity errors in twisted pair cabling. Wiremappers are used to verify if the cable is physically terminated properly at both ends and that there are no major cable defects present in the cable, such as cut conductors, that would prevent signal continuity. coloured LED lights identify pass/fail conditions of each pair of wires in RJ-45 8 conductor cables.