The only difference in filling the T-3650 and the T45 is the T45's fill plug is on the passenger side with the drain... That being said (to save you the whole 5 seconds of confusion
) I changed mine recently and all I used was a small clear (Get clear... a lot easier
) tube I bought from Lowes for about 2 bucks and a funnel around the house that fit it snugly (no leakage
) Make sure the tube is flexible as it has to bend without crimping in a relatively small space, and all I did was take off the shifter, plug the other end of the tube into the fill hole, and then filled her up while sitting in my passenger seat until I heard dripping. It's pretty dern easy
Hope you find this helpful.