Honda 2003 CR-V Owner's Manual page 221

Towing a Trailer
Trailer Brakes
Honda recommends that any trailer
having a total weight of 1,000 lbs
(450 kg) or more be equipped with
its own electric or surge-type brakes.
If you choose electric brakes, be
sure they are electronically actuated.
Do not attempt to tap into your
vehicle's hydraulic system. No
matter how successful it may seem,
any attempt to attach trailer brakes
to your vehicle's hydraulic system
will lower braking effectiveness and
create a potential hazard.
220
Driving
Trailer Lights
GROUND
(BLACK)
RIGHT TURN SIGNAL
(GREEN/YELLOW)
All states and Canadian provinces
require some type of trailer lights.
Check requirements for the areas
where you plan to tow.
Your vehicle has a trailer lighting
connector located behind the left
side panel in the cargo area. Refer to
the drawing above for the wiring
color code and purpose of each pin.
BACK-UP LIGHT
(GREEN/BLACK)
BRAKE LIGHT
(WHITE/BLACK)
If you use a converter, you can get
the connector and pins that mate
with the connector in your vehicle
from your Honda dealer.
Since lighting and wiring vary in
trailer type and brand, you should
also have a qualified mechanic install
a suitable connector between the
vehicle and the trailer.
LEFT TURN SIGNAL
(GREEN/RED)
TAILLIGHT
(RED/YELLOW)