What happens next in this paragraph?

How to install a gps navigation system for your automobile
Note that this unit is compatible only for vehicles come with a 12-volt battery and negative grounding.
Avoid short circuits in the vehicle electrical system during installation.
Be sure to disconnect the negative terminal (-) from the battery before the installation.
pick from the following.
[I] Secure all wiring with cable clamps or electrical tapes. Do not allow any bare wiring to remain exposed.;
[II] Generally, these devices operate as above, with or without electricity. Connect a copper wire to the wire terminal of the navigation system.;
[III] Check with your vehicle licensing board to determine if the battery can be wired in the vehicle and each has an av battery. Keep the vehicle on a flat surface, preferably on deck.;
[IV] This section uses an inputs ion (dc) meter. Carbon ion meter reduces resistance slightly by breaking down the charge in the drive-area.;
[I]