I just finished installing a JVC KW-ADV64BT and I'm having a slight issue with the AV input. I have a stand alone XM radio that i have permanently mounted that I would like to plug into the "line in" jacks on the rear of the unit. If I just plug in the audio L and R channel and select AV-input on my deck I get the audio but a get a solid blue warning display saying "no signal" and it never goes away.

It seems that its also looking for a video signal at all times when using the AV input. Does anyone know a way to fake a signal or do something so the blue "no signal" bar can go away?