This is the service manual for the AVIC-Z150BH & AVIC-F50BT units.  (Link at bottom of post.) Request for Help If you're interested in helping, please let me know.  Also, if you've already done the modifications listed below for other models, and can share insight, that would also be appreciated.  This should work for the 1) AVIC-Z150BH, 2) AVIC-X950BH, 3) AVIC-X850BT*, and 4) AVIC-X8510BT* units -- and the respective European equivalents. Modification Goals I want to do the f