Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to select a gps car navigation system [title] Decide how often you intend to use the system. [step] Inexpensive systems simply plug in to your car's cigarette lighter and are small enough to store in your glove compartment, but they're not as user-friendly. [title] Consider the layout of your car.

Ending1: [step] Some systems come with a monitor that displays a map. The monitor is commonly installed on the dashboard or on a pedestal extending from the dashboard. Ending2: [step] If your car doesn't have these systems available at home, it will be in bad shape and will won't fit in on the road. [title] Check out car search engines for a gps car navigation system system. Ending3: [step] Make sure you will have access to doors and windows. You'll want to select, hand-signal, automatic transmission, front, rear brake, and control buttons. Ending4: [step] If you will be using the steering wheel, check the layout of your car before making the trip. If you will be using the navigation wheel, make sure it is centered and the alignment will reflect what you're doing.

Answer format: ending1/ending2/ending3/ending4