Victron energy BEI Manual De Instrucciones página 7

2.2 Wiring
2.2.1 BEI
Connect the 4 pin connector to the 4 pin header on the BMV.
Make sure that pin 1 (red wire) is to the outside (right) of the
BMV when looking at the backside.
2.2.2 E-plex bus
Connect the E-plex sockets on the BEI to one of the sockets
on the Victron ViewTouch. Refer to the documentation of the
control module for more detail.
BMV
BMV
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BMV to Eplex
Interface
Victron View Touch
Figure 1 - Wiring diagram
PIN1
3