Wow, you have brought to my attention that the Transmission page's pictures are alllllll messed up. I'll contact TrackVino about that as soon as he gets back from vacation..
Here is a better image:
![](http://www.marlincrawler.com/images/w56b_left_500.jpg)
Reading off of your two arrows, the fill plug is the left arrow. It is located directly to the left (forward) of the reverse light switch. The plug to the right that you speak of is the shifter detent spring that simply returns the shifter to the center-netural position when out of gear.
Regards,
BigMike