Originally Posted by klassic
Check if you have continuity between your mysterious battery white and ground.
Like I said before, I thought that wire was your chassis ground to battery -
I did, nope, white at the battery area to chassis ground or battery - (even + for that matter) is open.
I also used a jumper in the cabinet to the black and tested everywhere I could find. I tested to the battery and chassis and all over the place...open.
Could be the black in the cabinet and the white at the battery are meet somewhere and are taped together and labeled. No idea where. I counted the wires inside the cabinet and I don't see any other 8 gauge wires from the wall to the cabinet other than those 2. Meaning if as the dealer said they have to "Fish" the wires out they are not where they are supposed to be in the cabinet area. The cabinet has open areas where the cables are run from the wall behind the microwave to an open space under the cabinet. See my photo. The red line is where all the wires going to the cabinet area there are routed in a concealed air space created under the inside bottom and the outside bottom of the cabinet. The bottom of the cabinet is made with two layers with an air gap inside used as a conduit.
FWIW: [Removing the microwave (easily done only a few screws) you can clearly see all this]
Could be the missing link is behind the fridge but I'm not going to remove it to find out at this stage.