I recently installed a DVD entertainment system (headrest video displays), and cannot seem to find a switched 12 volt source. Seems that all of the 12 volt sources stay on when the vehicle is turned off, which would be a big problem if my Hummer is turned off, and one of the kids forgets to shut off the DVD or video screens. Does anyone have a wiring diagram for a 2003 Hummer H2? I can only seem to find the hardcopy service manuals on-line, for $100.00.
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