How/where to fill up fluid for convertible top motor?

Hi

I tried the convertible top switch today and the motor seems to be kinda noisy. I think the fluid is running low. Any advice on how to top up the fluid? I looked around the motor and cant seem to find it. (Its 830pm here so that might be the reason why...)

Anyone with a picture of the motor that shows where to top up, would be appreciated. Thanks in advance.

Oh btw its a '66 Dart 270 Convertible.

Syed