Solenoid application is as follows, 1st gear, solenoid 1 On, solenoid 2 Off. 2nd gear, solenoid 1 On solenoid 2 On. 3rd gear solenoid 1 Off solenoid 2 On. 4th or Overdrive solenoid 1 Off soleniod 2 Off. Hope this is of use. Login to read more.