TM 9-2320-361-20 2-20. STE/lCE DESCRIPTION AND OPERATION (Contd) d. Cable Assemblies. (1) General. Cable assemblies are referred to by cable number and by a name which describes how cable is used. If necessary, two transducer cables (W4) can be joined with adapter supplied in the transducer kit to make one long cable. (2) Installation. When cables are connected, the large key on cable connector mates with a keyway on transducer connector or VTM connector for proper installation. If you experience any difficulty during testing and suspect that a cable is bad, refer to TM 9-4910-571-12&P for checking cable continuity. CABLE ASSEMBLIES e. Transducer Kit (TK). (1) General. The transducer kit contains a pulse tachometer transducer, a pressure and vacuum transducer, and necessary adapters (bushing, plugs, tees, etc.). Also included in transducer kit is a current probe for measuring current and a test probe cable for measuring voltage and resistance. All fittings do not have part number markings. The legend will help to identify items. Before installing any transducer kit item on vehicle, be sure to clean the mounting surfaces. This is particularly important if you are going to open fuel lines or tap into manifolds. Dirt particles entering engine can cause damage to both engine and transducer kit item. The transducers should be kept clean, free of dirt and grease, and handled with reasonable care. 2-155