Power Supply and Ignition Key
Connect Omnicomm Profi, Profi Wi-Fi terminals as per diagrams without battery disconnect switch:
after ground disconnect switch:
![after ground disconnect switch after ground disconnect switch](/_media/en/omnicomm_terminals3x-manual-optim/powsup2.jpg)
before ground disconnect switch:
Connect Omnicomm Optim terminals as per diagrams without
ground disconnect switch:
after ground disconnect switch:
![before ground disconnect switch before ground disconnect switch](/_media/en/omnicomm_terminals3x-manual-optim/powsup03.jpg)
Connect Omnicomm Smart terminals as per diagrams without
ground disconnect switch:
after ground disconnect switch: