Wiring harness components plug into the 5 connectors in the 2Q BMS:

1. "RS485-0" Connector: Normally connects to the REC WiFi unit with the cable supplied with the WiFi unit. As part of this wire harness a spare connector is supplied with pins that an installer can use to connect to, e.g. an industrial RS485 interface in an industrial system.
2. "RS 485 CAN T Cp" Connector with the following wires
   • "RS 485-1" no wires on these pins
   • "CAN" has a 0.5metre cable to a Weipu Series 13 connector (note that mostly inverters and controllers use an RJ45 connector for their CAN Bus, however as there is no industry standard pin-out for the RJ45 this leg of the CAN Bus cable is a separate purchase)
   • "T" has a jumper wire
   • "Cp" no wires on these pins
3. "CELLS" Connector with the following labelled wires with a clean cut at 2metres length (for termination by the installer):
   • 17 cell wires labelled as follows: "Cell 1-", "Cell 1+", etc to "Cell 16+"
   • Power supply wires labelled: "Pack -", "Pack +"
   • Pre-charge wire labelled: "Precharge"
4. "Isens Tsens" Connector with the following labelled cables each 2metres length
   • DS18B20 digital temperature sensor x 2 (unlabelled)
   • Shunt sense cable with 4mm lugs with 1 labelled "+" that attaches to the battery side of the shunt
5. "Power symbol I/Os" Connector with 1 metre length cable and wire as follows:
   • Power symbol: Cable to BMS on/off switch
   • I/O wires labelled as follows:
     • "OPTO RELAY IN", "OPTO RELAY OUT"
     • "OC 1-", "OC 1+"
     • "OC 2-", "OC 2+"