Hi! Throttle position help please!

Hi all! I am trying to replace the tps on my xl-7, but my manual of course doesn't show me where it is located, and I honestly have no idea! I am looking at my engine, and on the very top of it there is something that looks very similiar, but how can I be sure!? Any advice on where I could find this magic little TPS would be greatly appreciated!! :1zhelp: Thanks so much!
God bless,
Heather :)