These instructions are for getting television audio to come through the radio speakers in your trailer. These instructions are for the Jensen JWM22, but may apply to other Jensen models. 

Instructions for HDMI

If watching content on a device that supports an HDMI connection (such as a newer DVD player, roku, or firestick) plug the HDMI cable into the HDMI port on the face of the Jensen radio. Then hit the 'HDMI/AUX IN' button on the radio until the screen shows 'HDMI'. 

Audio from the HDMI device should now play through the radio speakers. If still no audio, make sure your Audio Zones are set to ‘on’ and that you have the volume turned up on both the radio and on the television.

Instructions for Coax/VGA/Component/AV

On the Television hit the ‘Menu’ button and change the ‘TV Speaker’ setting to off. Then go to the setup menu and make sure that ‘Audio Out’ is set to ‘Variable’

On the Jensen radio hit the ‘HDMI/AUX’ button until it shows ‘AUX IN’

Now audio from the TV’s Audio Out connection should be sent through the radio’s speakers. If still no audio, make sure your audio zones are set to ‘on’ and that you have the volume turned up on both the radio and on the television.