Igloo 12V electric cooler arduino modification for the van

At the thrift store I found another one of these 12V Igloo electric coolers. They have a 35W Peltier cooler installed in them and can keep food and drinks nice and cold even on a warmer day. This particular unit I managed to score for only $7.00, which I thought was a good deal.After getting it home and plugging it into 12V, I discovered that it didn't work at all,