Originally Posted by Beau388
The entire front cap is powered by the chassis battery through the 100 amp circuit breaker under the hood by the chassis battery. The fuse panel down by the drivers left foot distributes that electricity. Things like mirror heat,mirror controls, fans, map lights, windshield wipers power to the jacks controller, ect. all come of the chassis battery. The only exceptions are the Ford supplied items, the chassis A/C, the radio and the 12 volt receptacles which are supplied by the Ford power distribution center..
But the question isn't what is powered by the chassis battery; the question is: What is continually powered by the chassis battery when the ignition is off that could be draining the chassis battery?