User's Guide

OVMS System Components
The OVMS Module
The OVMS v3 module is housed in a plastic
enclosure; held secure by four small
screws. Once open, you can see the main
OVMS v3 motherboard, and an optional
modem board.
At one end of the module is the main DB9
connector you will use to connect to the
vehicle, as well as GSM (cellular) and GPS
(positioning) antenna connections.
At the other end of the module is the DA26
expansion connector, the USB diagnostic
connector, and a Micro SD card slot.
If removing/installing optional expansion
boards (such as used for cellular
connectivity), please take care to ensure
you secure screw down the expansion
board using the four pillar posts provided.
Also, please ensure that the cellular modem
connections are correct (follow the printed
table on the modem board to know which
antenna is which).
Warning!
The OVMS v3 enclosure is not waterproof, and the components can be
damaged by water. Do not get the module wet, and do not connect it to
your vehicle if it is wet.
OVMS v3 User Guide Page 9 / 86