If it doesn’t, you’ll need some punch in of external splitter or input selector.

A lot of video head units support several inputs, though, as do roof- andheadrest-mountedscreens.

In the United States, you’ll need anATSC tunerthats capable of receiving digital, high-definition broadcasts.

watching tv in the car

Don Mason / Getty Images

Some tuners include built-in antennas, which offer the easiest way to receive TV on the road.

However, an external antenna typically pulls weaker signals.

Just as with terrestrial radio, OTA TV signals offer limited range.