2017 TBS Cable/TV Amplifier

[Jackson]

Upon close inspection the amplifier has three (3) inputs to a single output.  One input I assume for the roof antenna, the second for the external cable connection and the third is unknown.  Has anyone and idea where the third one may lead from? I am trying to track down reception issues.

[Chappy133]

DVD player in the radio head? 

[ADR]

Upon close inspection the amplifier has three (3) inputs to a single output.  One input I assume for the roof antenna, the second for the external cable connection and the third is unknown.  Has anyone and idea where the third one may lead from? I am trying to track down reception issues.

Which antenna and amp?

I'm not familiar with the 2017 but my 2018 has the King antenna and amplifier/splitter.
L'Lite wired it wrong at the factory-  I downloaded the manual and corrected the wiring.


Here is the diagram of the splitter for mine with the round disk antenna.


BTW the King antenna/amp on mine isn't that great even hooked up properly...

[Merlin]

From what @ADR posted, you may have an external coax connection for an outside TV.

[Jackson]

Much obliged all.  Sorry for the delay in responding as internet here can be spotty.  Reconnected the amp as per the diagram. Thanks. 35 years in the television industry and the concept of a coax connection from a DVD player just never entered my mind.