Drive toward the intersection of West Addison Road and North Clark Street. If you are coming from the Lake Michigan area, you will need to go underneath the CTA Red line to get to the parking lots.
Take a left on North Clark Street if you are coming from the west side of Wrigley Field and you will see a row of parking lots on either side. If you are coming from the east, take a right onto North Clark Street and you will see parking lots on either side of you.
Walk south on North Clark Street and take a left on West Addison Road. You will follow the south end of Wrigley Field until you hit the CTA Red Line - Addison Station.