3M Industrial RJ45 Modular Plug for Ethernet, 3R108-0000-000CE PDF file4.2 Attach cable clamp so the wiring diagram image matches the connector. (Figure 7) Figure 7 4.3 Remove the wiring diagram and fasten screws with a screwdriver. Make sure the cable is firmly secured and there are no gaps between the modules. (Figure 8) Figure 8 4.4 Place wires into the slots of the cover module following the wiring diagram. Wire Connectors | 3M United States 3M Wire Connectors. On the worksite, only the right wire connector does the job. So forget the guesswork, and look for top quality products that match your project needs. 3M Electrical Wire Connectors are designed for maximum efficiency, so you can get ahead and stay ahead on projects. TEC2M Auto Switch Combi Relay wiring diagram | UK-Trailer Mar 10 2011 Filed In: Wiring Diagrams TEC2M Auto Switch Combi Relay This relay automatically senses the condition of the towing vehicles alternator and diverts some of the current charging it’s battery to the caravan’s battery or fridge as well.