The 2012 lists the same as the 2016 but you will still need to verify the proper wire color function and location.
Directwire
2012-2016 Chevrolet Sonic - North America
Remote Start, Security, Keyless Entry, Accessories
Item Wire / Color / Polarity / Wire Location
12 Volts RED / white (30A) + BCM under driver dash, blue 27 pin plug, pin 4
Starter yellow (for starter kill only) + starter motor or underhood fuse box, black 42 pin plug (X3), pin A2
Second Starter wht/pur (r-code); wht/blk (5V ref) (Tech Doc 1605) +9600 ohms ignition switch or BCM under driv dash, grn 25 pin plug, pins 15, 22
Ignition PURPLE / black + ignition switch or BCM under driv dash, green 25 pin plug, pin 6
Accessory purple / YELLOW + ignition switch or BCM under driv dash, green 25 pin plug, pin 5
Second Accessory (same as second starter) +6300 ohms
Keysense (same as second starter)
Data Bus GREEN/ purple (immobilizer LIN bus) data immobilizer module or BCM under driver dash, grn 25 pin plug, pin 2
CAN Bus High blue (high speed GMLAN) data data link connector or BCM under driv dash, blue 27 pin plug, pin 24
CAN Bus Low white (high speed GMLAN) data data link connector or BCM under driv dash, blue 27 pin plug, pin 23
CAN Bus SW green (low speed GMLAN) data data link connector or BCM under driv dash, blue 27 pin plug, pin 22
Power Lock BROWN / yellow (center dash switch) - BCM under driver dash, blue 27 pin plug, pin 19
Power Unlock BROWN / white (center dash switch) - BCM under driver dash, blue 27 pin plug, pin 15
Lock Motor BROWN / yellow 5 wire BCM under driver dash, pink 27 pin plug, pin 4
Driver Unlock Motor gray 5 wire BCM under driver dash, pink 27 pin plug, pin 1
Passenger Unlock Motor gray 5 wire BCM under driver dash, pink 27 pin plug, pin 2
Factory Alarm Arm (arms on lock with door open)
Factory Alarm Disarm (see disarm no unlock)
Disarm No Unlock (Passkey and ignition)
Parking Lights (+) PURPLE / gray (L); gray/brown (R) + BCM under driver dash, black 26 pin plug, pins 6, 5
Parking Lights (-) GREEN/ gray - BCM under driver dash, white 26 pin plug, pin 22
Hazards GREEN / WHITE - BCM under driver dash, blue 27 pin plug, pin 26
Turn Signal (Left) blue/white (F); blue/white (R) + BCM under driver dash, brown 26 pin plug, pins 2, 1
Turn Signal (Right) GREEN/ purple (F); blue/purple (R) + BCM under driver dash, black 26 pin plug, pins 3, 4
Headlight WHITE/ purple - BCM under driver dash, white 26 pin plug, pin 16
AutoLights GREEN/ brown (ground to turn off) - BCM under driver dash, white 26 pin plug, pin 11
Reverse Light GREEN / WHITE + BCM under driver dash, gray 26 pin plug, pin 3
Left Front Door Trigger gray (xpress down wndw); gray(xpress up/down wndw) - BCM, pink 27 pin plug, pin 22; driv window motor, blk 7 pin plug, pin 6
Right Front Door Trigger gray - BCM under driver dash, pink 27 pin plug, pin 13
Left Rear Door Trigger gray - BCM under driver dash, pink 27 pin plug, pin 27
Right Rear Door Trigger gray - BCM under driver dash, gray 26 pin plug, pin 11
Dome Light gray + BCM under driver dash, gray 26 pin plug, pin 1
Trunk/Hatch Pin PURPLE / gray - BCM under driver dash, pink 27 pin plug, pin 5
Hood Pin BROWN / green - BCM under driver dash, black 26 pin plug, pin 24
Trunk/Hatch Release yellow/blue (rear handle switch) - BCM under driver dash, pink 27 pin plug, pin 15
Trunk Release Motor GREEN/ brown or gray / YELLOW + BCM under driver dash, black 26 pin plug, pin 12
Tachometer GREEN/ YELLOW, yellow/white, BROWN / pur or BROWN / yel ac any fuel injector, black or gray 2 pin plug, pin 2
Clutch Pedal yellow (see Tech Doc 10001) resistor clutch switch, black 3 pin plug, pin B
Fuel Pump PURPLE / black + underhood fuse box, black 72 pin plg (X2), pin J12
Rear Defroster BROWN / purple + latched BCM under driver dash, black 26 pin plug, pin 9
Mirror Defroster (same as rear defroster)
Left Front Heated Seat (low speed GMLAN)
Right Front Heated Seat (low speed GMLAN)
Speed Sense (wheel speed sensor)
Brake Wire BROWN / yellow + BCM under driver dash, black 26 pin plug, pin 11
Parking Brake blue/purple - BCM under driver dash, gray 26 pin plug, pin 15
Horn Trigger BROWN / white - BCM under driver dash, brown 26 pin plug, pin 19
Wipers gray + BCM under driver dash, black 26 pin plug, pin 16
Left Front Window (Up/Down) (motor is part of module)
Right Front Window (Up/Down) yellow/black - BROWN / yellow A driver kick, door harness
Left Rear Window (Up/Down) GREEN/ gray - BROWN / blue A driver kick, door harness
Right Rear Window (Up/Down) GREEN/ gray - BROWN / blue A driver kick, door harness
Sun Roof (Open/Close) GREEN / WHITE - blue/white (funct with ign on only) + sunroof switch, black 4 pin plug, pins 2 - 3
Audio
Item Wire Color Polarity Wire Location
Radio 12V RED / blue + radio, black 44 pin plug, pin 44
Radio Ground black - radio, black 44 pin plug, pin 38
Radio Ignition (low speed GMLAN)
Left Front Speaker (+/-) blue - BROWN / blue +,- radio, black 44 pin plug, pins 40 - 32
Right Front Speaker (+/-) yellow - yellow/black +,- radio, black 44 pin plug, pins 39 - 31
Left Rear Speaker (+/-) green - GREEN/ black +,- radio, black 44 pin plug, pins 42 - 34
Right Rear Speaker (+/-) white - blue/black +,- radio, black 44 pin plug, pins 41 - 33
Aux. Audio Input Left (+/-) gray - brown +,- radio, black 44 pin plug, pins 24 - 23
Aux. Audio Input Right (+/-) green - brown +,- radio, black 44 pin plug, pins 10 - 23
RSE Video (+/-) gray / YELLOW - WHITE/ blue (rearview camera video) +,- radio, black 44 pin plug, pins 7 - 8
Satellite Radio 12 Volts (built into radio)
What Fits
Item Size Depth Location
Headunit irregular center of dash
Left Front Speaker 6.5 3.5 left front door
Left Front Tweeter 1 left front pillar
Right Front Speaker 6.5 3.5 right front door
Right Front Tweeter 1 right front pillar
Left Rear Speaker 6.5 3 left rear door
Right Rear Speaker 6.5 3 right rear door
Satellite Radio Tuner (built into radio)