Brad, looking at the pics, I see the sink is recessed under the countertop, but is there room to remove the sink, allowing room to perhaps lean in from the top. Still awkward, but may offer more room.
I have taken apart a lot of cabinets in various RV's, some can be partially dismantled by removing screws on the inside. Possibly might be able to take the front of the cabinets out by accessing assembly screws. Use a mirror to find out how it's held together.
It's hit and miss and depends how they built it.
Another option, although a bit of work would be to remove the countertop for access from above. Chances are it is totally held in place with screws.
May need to become a contortionist to to get in there to get at the screws. I have used mirrors to get into tight spots to see whats there.
Is that your HWT behind and to the left of the damaged wires?
If so, maybe you could pull it out for access from the outside.
But I agree this is a factory problem and the manufacturer should go good for the repair. You're lucky you didn't have a fire...
2007 GMC 3500 dually ext. cab 4X4 LBZ Dmax/Allison - 2007 Pacific Coachworks Tango 306RLSS
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