Wiring diagrams for Honda civic 2009

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12 Volts white (50A) + ignition switch, brown 7 pin plug, pin 3
Second 12 Volts N/A
Starter yellow + ignition switch, brown 7 pin plug, pin 1
Second Starter N/A
Ignition blue + ignition switch, brown 7 pin plug, pin 6
Second Ignition N/A
Third Ignition N/A
Accessory orange + ignition switch, brown 7 pin plug, pin 4
Second Accessory red + ignition switch, brown 7 pin plug, pin 5
Third Accessory N/A
Keysense pink - ignition key switch, green 6 pin plug, pin 1
Data Bus lt. green (immobilizer data), yel (ign), blk (gnd) data Immobilizer Control Unit, white 7 pin plug, pins 3, 2, and 7
The Immobilizer Control Unit is around the ignition key switch.

Can Bus High N/A
Can Bus Low N/A
Can Bus Sw pink (door lock data) data Immobilizer Control Unit, white 7 pin plug, pin 4
The Immobilizer Control Unit is around the ignition key switch.

Power Lock green - driver kick, door harness, white 18 pin plug, pin 16
Power Unlock gray - driver kick, door harness, white 18 pin plug, pin 12
Lock Motor blue 5 wire driver kick, door harness, white 18 pin plug, pin 9
Driver Unlock Motor yellow 5 wire driver kick, door harness, white 18 pin plug, pin 10 or 15
Passenger Unlock Motor yellow 5 wire dash fuse box, lt. green 42 pin plug, pin 14 (4-door)
On the 2-door models, it is in the passenger kick, door harness or dash fuse box, rear, lt. green 10 pin plug, pin 8.

Parking Lights (-) gray - headlight switch, black/white 12 pin plug, pin 11
Parking Lights (+) red + dash fuse box, lt. green 42 pin plug, pin 19
Hazards green + hazard switch, blue 5 pin plug, pin 2
Turn Signal (Left) blue + dash fuse box, lt. green 42 pin plug, pin 40
Turn Signal (Right) brown + dash fuse box, lt. green 42 pin plug, pin 39
Headlight pink - headlight switch, black/white 12 pin plug, pin 10
AutoLights N/A
Reverse Light brown (4-door), purple (2-door) + dash fuse box, lt. green 42 pin plug, pin 15
Left Front Door Trigger green - dash fuse box, lt. green 42 pin plug, pin 37
Right Front Door Trigger lt. green - dash fuse box, lt. green 42 pin plug, pin 3
Left Rear Door Trigger brown - dash fuse box, lt. green 42 pin plug, pin 17
Right Rear Door Trigger gray - dash fuse box, lt. green 42 pin plug, pin 2
Dome Supervision pink - below dash fuse box, blu 6 pin plg, pin 6 or blu 20 pin plg, pin 18
Trunk/Hatch Pin blue - dash fuse box, lt. green 42 pin plug, pin 36
Rear Glass Pin N/A
Hood Pin lt. blue - dash fuse box, blue 21 pin plug, pin 13
Trunk/Hatch Release use trunk release motor
Trunk Release Motor green + dash fuse box, lt. green 42 pin plug, pin 20
Fuel Door Release N/A
Power Sliding Door (Left) N/A
Power Sliding Door (Right) N/A
Factory Alarm Arm orange - driver kick, door harness, white 18 pin plug, pin 13
Meter this wire while turning the key in the driver door key cylinder.

Factory Alarm Disarm brown - driver kick, door harness, white 18 pin plug, pin 7
Meter this wire while turning the key in the driver door key cylinder.

Disarm No Unlock see factory alarm disarm
Trunk Alarm Shunt green (GX, LX, LX-S models only) - dr kick, wht 20P plg, pin 18 or wht 23P plg, pin 6
Meter this wire while turning the key in the trunk key cylinder.

Tachometer NOT yellow/black or yellow/green ac any fuel injector
Wait to Start N/A
Neutral Safety N/A
Clutch Pedal black (in), orange (out) - N.O. clutch switch, yellow 2 pin plug, pins 2 and 1
Fuel Pump green (all models except GX) + dash fuse box, lt. green 42 pin plug, pin 9
Rear Defroster brown to lt. green - latched driver kick, blue 14 pin plug, pin 9 or 8, or blue 20 pin plug, pin 15
Mirror Defroster same as rear defroster
Left Front Heated Seat lt. green (L), blue (H) + latched driver seat heater switch, white 6 pin plug, pins 3 and 6
Right Front Heated Seat green (L), yellow (H) + latched passenger seat heater switch, white 7 pin plug, pins 4 and 7
Speed Sense blue (all models except USA DX) ac radio, gray 17 pin plug, pin 13
Brake Wire lt. green + brake switch or dash fuse box, lt. green 42 pin plug, pin 34
Parking Brake orange or lt. green - parking brake switch or driver kick, white 23 pin plug, pin 13 or 18
Horn Trigger orange - horn switch, white 20 pin plug, pin 10
Wipers orange (L), white (H) - wiper switch, black/white 8 pin plug, pins 2 and 4
Left Front Window (Up/Down) yellow - green (4-door) or red - green (2-door) A power window master switch, gray 22 pin plug, pins 10 and 9 (4-door)
On the 2-door models, they are in the white 16 pin plug, pins 3 and 2.

Right Front Window (Up/Down) orange - brown A driver kick, door harness, blue 23 pin plug, pins 16 and 15
Left Rear Window (Up/Down) green - purple A driver kick, white 23 pin plug, pins 1 and 9
Right Rear Window (Up/Down) lt. blue - red A driver kick, white 23 pin plug, pins 7 and 2
Sun Roof (Open/Close) lt. blue and wht or pur (open) (w/ign on only) + moonroof switch, gray 12 pin plug, pins 6 and 10
Sun Roof (Limit/Close) yel or gray and wht or pur (close) (w/ign on only) + moonroof switch, gray 12 pin plug, pins 8 and 10
Memory Seat 1 N/A
Memory Seat 2 N/A
Memory Seat 3 N/A
Radio 12V white + radio, gray 17 pin plug, pin 17 or gray 20 pin plug, pin 10
Radio Ground black - radio, gray 17 pin plug, pin 9 or gray 20 pin plug, pin 20
Radio Ignition purple + radio, gray 17 pin plug, pin 14 or gray 20 pin plug, pin 2
Radio Illumination gray (parking lights), red (dimmer) +,- radio, gray 17 pin plug, pins 10, 1 or gray 20 pin plug, pins 9, 19
Factory Amp Turn-on lt. blue + radio, gray 20 pin plug, pin 16
Power Antenna gray or yellow/green (USA DX) + radio, gray 3 pin plug, pin 3 or gray 20 pin plug, pin 1
Left Front Speaker (+/-) lt. green - pink or blue - red or blue - orange +,- radio, gray 17 pin plug, pins 12, 3 or gray 20 pin plug, pins 8, 18
If equipped, the amplifier is under the driver seat (4-door), or under the middle of the dash (2-door). On vehicles with amplifier, the speaker wires are lt. green - pink at the amplifier, blue 20 pin plug, pins 3 and 13. The tweeter wires are red - green at the amplifier, blue 20 pin plug, pins 4 and 14.

Right Front Speaker (+/-) gray - brown or blue - pink or green - red +,- radio, gray 17 pin plug, pins 15, 7 or gray 20 pin plug, pins 7, 17
If equipped, the amplifier is under the driver seat (4-door), or under the middle of the dash (2-door). On vehicles with amplifier, the speaker wires are gray - brown at the amplifier, blue 20 pin plug, pins 2 and 12. The tweeter wires are pink - blue at the amplifier, blue 20 pin plug, pins 1 and 11.

Left Rear Speaker (+/-) yellow - brown or black - white +,- radio, gray 17 pin plug, pins 11, 2 or gray 20 pin plug, pins 6, 16
If equipped, the amplifier is under the driver seat (4-door), or under the middle of the dash (2-door). On vehicles with amplifier, the speaker wires are gray or yellow - brown at the amplifier, blue 20 pin plug, pins 8 and 18.

Right Rear Speaker (+/-) blue - orange or lt. green - purple or brown - yel +,- radio, gray 17 pin plug, pins 16, 8 or gray 20 pin plug, pins 5, 15
If equipped, the amplifier is under the driver seat (4-door), or under the middle of the dash (2-door). On vehicles with amplifier, the speaker wires are blue - orange at the amplifier, blue 20 pin plug, pins 7 and 17.

Center Channel (+/-) N/A
Subwoofer (+/-) green - red amplifier, blue 20 pin plug, pins 5 and 15
If equipped, the amplifier is under the driver seat (4-door), or under the middle of the dash (2-door).

Aux. Audio Input Left (+/-) yellow - brown (common) +,- radio, gray 20 pin plug, pins 13 and 3
The USB audio input wires are red - green at the radio, white 14 pin plug, pins 6 and 14.

Aux. Audio Input Right (+/-) green - brown (common) +,- radio, gray 20 pin plug, pins 14 and 3
The USB audio input wires are white - black at the radio, white 14 pin plug, pins 5 and 13.

RSE Video (+/-) N/A
RSE Audio Left (+/-) N/A
RSE Audio Right (+/-) N/A
Satellite Radio 12 Volts blue + XM Receiver, white 14 pin plug, pin 1
If equipped, the XM Receiver is in the right side of the luggage compartment.

Satellite Radio Ground black - XM Receiver, white 14 pin plug, pin 11
Satellite Radio Ignition lt. blue + XM Receiver, white 14 pin plug, pin 2
Satellite Radio Antenna (coaxial cable)
Satellite Audio Left (+/-) red - green +,- XM Receiver, white 14 pin plug, pins 6 and 14
Satellite Audio Right (+/-) white - black +,- XM Receiver, white 14 pin plug, pins 5 and 13
Item Size Depth Location
Headunit irregular center of dash
Left Front Speaker 6.5 left front door
Left Front Tweeter left front dash
Right Front Speaker 6.5 right front door
Right Front Tweeter right front dash
Left Rear Speaker 6.5 left rear deck
Left Rear Tweeter N/A
Right Rear Speaker 6.5 right rear deck
Right Rear Tweeter N/A
Center Channel N/A
Subwoofer 8 top center of rear deck
Left Front Headrest
Right Front Headrest
Left Rear Headrest
Right Rear Headrest
Satellite Radio Tuner right side of luggage compartment