Subaru Forester: Connecting a trailer / Side mirrors

After hitching a trailer to your vehicle,
check that the standard side mirrors
provide a good rearward field of view
without significant blind spots. If significant
blind spots occur with the vehicle’s standard
side mirrors, use towing mirrors that
conform with Federal, state/province and/
or other applicable regulations.
CAUTION
Direct splicing or other improper
connection of trailer lights may
damage your vehicle’s electrical
system and cause a malfunction of
your vehicle’s lighting system...
Other information:
WARNING
To avoid accidental activation of
the system or rendering the system
inoperative, which may result
in serious injury, no modifications
should be made to any
components or wiring of the SRS
airbag system.This includes following modifications...
This function prompts the driver to confirm
the presence of passengers and cargo in
the rear.
This function will be activated when the
rear doors are opened and closed.
It alerts the driver by warning messages on
the combination meter display (color LCD)
and beeps when the ignition switch is in
the “OFF” position...