Checking Trans and diff Fluid on TR6

[Edward Lancaster <elancast@bellsouth.net>]

Sorry for such a basic question, but its time to check the fluids in the
diff and trans. I thought the fill holes would be obvious (okay, after
owning the car for almost a year I should know better), but after
looking under the car I could find only a drain plug on the diff. The
service manual offers no clue as to the location of the fill holes. How
does one go about checking these fluids and what should I look for as
far signs of possible problems?

Ed Lancaster
74 TR6