Article reference KA-01499
In order to connect the multiple CAB/DABs via a door switch, you need to connect them in series as per the diagram below.

Applicable Models:
CAB10ER, CAB20ER, BAB10W, CAB10E, CAB15E, CAB20E, CAB10ER, CAB15ER, CAB20ER, CAB15W, CAB20W, CAB10WR, CAB15WR, CAB20WR, CAB10A, CAB15A, CAB20A, CAB10AR, CAB15AR, CAB20AR, DAB10ER, DAB15ER, DAB20ER, DAB10E, DAB15E, DAB20E, DAB10W, DAB15W, DAB20W, DAB10WR, DAB15WR, DAB20WR, ARC10E, ARC15E, ARC20E, ARC10W, ARC15W, ARC20W, ARC10A, ARC15A, ARC20A, DAB10A, DAB15A, DAB20A, DAB1-AR, DAB15AR, DAB20AR, CFH60, CFS90, CFH120