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

Rear accessory power supply socket system wiring diagram

Rear wiper and washer system wiring diagram

Other materials:

Remote keyless entry system
CAUTION  Do not expose the remote transmitter to severe shocks, such as those experienced as a result of dropping or throwing.  Do not take the remote transmitter apart except when replacing the battery.  Do not get the remote transmitter wet ...