Update, i actually picked up the used MT45 from CL today. The seller was cool enough to hold it for me till today.
The seller said it was not working and Engel over the phone told him it was the compressor and Engel wanted $375 to overhaul the unit except the power supply. He had it running for 7-8 years in freeze mode off 110V. Anyways i brought it home and disassembled it right now and cleaned up the fan and the dust. I checked the fuse and plugged it into the 110V outlet and no go, no light or noise. I grabbed the 12V plug that wasn't used in a long time and plugged it into the car. It WORKS!!!!! I set the temp before freeze and it at 40 degrees right now.
Edit, it quickly got down to 6 degress set on freeze mode.
The best part is i scored it for $50 bucks. Its a bit rough,used on a boat for 7-8 years. i'm suprised that it doesn't have much rust especially on the bottom. Only surface rust on the small scratches.