If you have a ZF 5hp24 tranny (check the green sticker on the drivers side rear of the tranny) , then the fill plug is the one on the passenger side towards the rear of the tranny. It faces out towards the cat convertor. Read the treads for the oil change here or on the web, I found several with photos that were good. I believe one of them was a Jaguar posting, same trans. Good Luck.