FINALLY finished installing my audio video mod this weekend. Tapped into the Nav to facilitate "Dom's" unit for video/backup camera - then fabricate my own audio input switch out of a few relay etc. and tapped into the XM line inputs for my audio side..
Big picture is it works great! I have one switch in the center console that not only activates the XM/audio relays but video relay as well.

Now my question...

When switching between audio sources the volume level is not equal. The XM is louder than my DVD source. Thus, if your switching from DVD to XM you must remember to turn the volume down in order to not have a large change etc.. I have the "output" levels maxed on the DVD player (RCA output only). I would like to just add an "adjustable booster" etc. to the DVD/audio outputs that would allow me to evenly match the line level of the XM. My problem is I have no idea of what is out their/available for this situation. I don't want to decrease the XM/stock side line level, just have the ability to adjust/increase my "auxiliary" audio input...


Any suggestions from you experts??

Thanks

Smitty