Ill monitor things see how they go - but fingers crossed. Ive fitted an interrupter switch now on this yellow wire and can see significantly less current draw when the car is switched off than I did before. The overhead monitor is actually drawing power on the yellow wire (a battery connected circuit not ignition switched). Well I certainly think the DVD system is the culprit. Ive managed to get it going every time by doing a combination of toggling window switches openclosed unplugging and replugging accessories into the lighter socket and stoppingstarting car. Battery keeps running flat on it and then when charged it seems hit and miss as to whether the ETACS will spring back into life. Having bit of a nightmare with my 04 Sedona. KIA CARNIVAL Kia Sedona - DVD System Flattens Battery