Subaru Legacy BN/BS (2015-2019) Service Manual: Charging system wiring diagram

Can communication system wiring diagram

Clearance light and illumination light system wiring diagram

Other materials:

To arm the system using the access key/remote transmitter
Close all windows and the moonroof (if equipped).  Remove the key from the ignition switch (models without "keyless access with push-button start system")/turn the push-button ignition switch to the "OFF" position (models with "keyless access with push-button start system"). ...