LClifton
Member
I'm going out tomorrow to give a little more time to this project. For me, (currently) if it's not plug and play I struggle, honestly speaking. But I am learning.If you have the XMD-4 there is only one set of AUX-IN plugs so if you have some in the cabinet and they work then a previous owner must have extended them for access. This would be enable when you select "AUX" for input.
If you want to add bluetooth using something like the Fusion BT-100 then you will need to attach to the RCA inputs at the back of the head unit and power the BT adapter from a 12V source that is easily available. I wired to the switched side of my stereo breaker and the ground block.
-Kevin