UPDATE
Optima replaced the 1 year old yellow top no problems and I installed it last night. Had the fridge on a/c all night set at 34. This morning I unpluged the a/c and let it switch to d/c the plug was reading 12.9 as soon as the fridge switched on it went to 10.3 not good. Left it sitting there I wont know till this evening after work if it maintained temperature.
Remove the cig lighter plug and just hardwire it. Use an inline fuse of course. This is what solved the same problem on mine.
Well I would but there are a lot of fishing and hunting trips where I ride in other peoples trucks and I would like to be able to take it.
Ok I got it figured out or at least fixed! There must have been a cut or kink in the negative wire somewhere. I ran a new negative wire same spot same everything and bingo I can now hear the pur of a compressor :wings:. The fridge was 33 this morning when I left for work. On a side note must ave been time for a new battery anyways all lights are brighter and the truck even runs better. Thanks for all the help guys!!!!