I wouldn't bother stuffing around with the 12 pin just run a 6 or 8 B&S line from draw bar to fridge with anderson on either end and just disconnect the original 12v input at the fridge terminal and connect your new cable to it, save the effort as the loss would more than likely still be there and you may find other things rely on the 12pin 12v supply not just the fridge....
I order my Anderson Plugs on ebay in bags of at least a dozen usually about $15 -$20 a bag...........................buying from a shop will send you broke.
I order my Anderson Plugs on ebay in bags of at least a dozen usually about $15 -$20 a bag...........................buying from a shop will send you broke.