[bryguymi]

most of the 12v compressors are in the aquahot bay on the left hand side of the bay.  mine is kinda behind the aquahot plumbing.  

it is very small and in our vintage usually an upright single cylinder thomas.  

tom

picture of one below.  but it is only as big around as your fist and 8-10 inches long

Thank you Tom......I did find it in the Aqua-Hot bay like you said.