Thank you all for your help. I ran positive and a ground back to the battery and all looks and works good. I can now get the refer down to 36 degrees and life is looking good.
I totally over engineered the fan setup by using 3 80mm computer fans mounted to the inside of the upper vent, might be an over kill but I just got tired of the refer section getting up over 60 degrees when it got above 75 degrees outside. DW and dog are happy so I guess that makes me happy. I will try to post pictures of the setup.
Once again thank you all for your help.