The location for the solenoid for the starter on a 1998 mercury mountaineer

It's number 2 and 5 in the picture

Hello,

The starter solenoid is mounted on the starter.
The starter motor and solenoid come as a single unit and get replaced at the same time.

https://www.2carpros.com/articles/how-to-replace-a-starter-motor

I have attached the starter replacement as well as testing procedures below.

Please let me know if you have any questions.
Thank you.