| Print Page | Close Window |
2018 Subaru WRX STI WiringPrinted From: the12volt.comForum Name: Vehicle Wiring Information & File Requests Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=147543 Printed Date: May 07, 2025 at 11:52 AM Topic: 2018 Subaru WRX STI Wiring Posted By: stiguy Subject: 2018 Subaru WRX STI Wiring Date Posted: December 27, 2022 at 8:48 PM Does anyone have the wiring diagram/spec sheet for a car alarm install on a 2018 Subaru WRX STI smart key push button start?
Replies: Posted By: tonanzith Date Posted: February 02, 2023 at 11:26 PM Item Wire Color Polarity Wire Location
12 Volts Red (50A) + Dash Fuse Box, rear, brown or white 9 pin plug, pin 6 Ground (chassis ground) Starter Pink + Keyless Access Module right of BIU, white 18 pin plug, pin 7 Ignition Violet + Keyless Access Module right of BIU, white 30 pin plug, pin 6 Second Ignition Lt. Blue + Keyless Access Module right of BIU, white 18 pin plug, pin 9 Accessory Blue + Keyless Access Module right of BIU, white 30 pin plug, pin 4 PTS 1 Black - Keyless Access Module right of BIU, white 30 pin plug, pin 30 PTS 2 Orange - Keyless Access Module right of BIU, white 30 pin plug, pin 28 CAN Bus High Red (DIAG CAN) Data OBD-Data Link Connector, black 16 pin plug, pin 6 CAN Bus Low Blue (DIAG CAN) Data OBD-Data Link Connector, black 16 pin plug, pin 14 CAN Bus High 2 White Data Keyless Access Module right of BIU, white 30 pin plug, pin 14 CAN Bus Low 2 Lt. Blue Data Keyless Access Module right of BIU, white 30 pin plug, pin 15 CAN Bus High 3 Red Data BIU behind dash fuse box, white 35 pin plug (B), pin 20 CAN Bus Low 3 Blue Data BIU behind dash fuse box, white 35 pin plug (B), pin 28 OBD 12 Volts White (7.5A) + OBD-Data Link Connector, black 16 pin plug, pin 16 OBD Ground Black - OBD-Data Link Connector, black 16 pin plug, pin 4 OBD Ignition Green + OBD-Data Link Connector, black 16 pin plug, pin 8 OBD Connector Black Under Driver Dash, Behind Dash Fuse Box IMMO Data Green/Black Data ECM next to air cleaner assembly, bottom black 48 pin plug, pin 43 IMMO Data 2 Yellow (USA alternate) Data Keyless Access Module right of BIU, white 18 pin plug, pin 13 Security Light Brown - BIU behind dash fuse box, white 31 pin plug (D), pin 26 Keyless Data Red Data Keyless Access Module right of BIU, white 28 pin plug, pin 17 Power Lock Lt. Green - BIU behind dash fuse box, white 35 pin plug (C), pin 9 Power Unlock Blue - BIU behind dash fuse box, white 35 pin plug (C), pin 20 Power Lock2 Lt. Green/Black (alternate location) - Driver Kick, white 28 pin plug, pin 15 Power Unlock2 Blue/Black (alternate location) - Driver Kick, white 28 pin plug, pin 16 Lock Motor Red/Green Reverse Driver Kick, white 28 pin plug, pin 17 Driver Unlock Motor Lt. Green Reverse Driver Kick, white 28 pin plug, pin 18 Passenger Unlock Motor Lt. Green Reverse Driver kick, white 20 pin plug, pin 11 Factory Alarm Arm (arms on lock with driver door open) Factory Alarm Disarm (proximity key and push button) Parking Lights Black/White + Dash Fuse Box, white 20 pin plug, pin 12 Parking Lights - Black/Blue - BIU behind dash fuse box, white 35 pin plug (B), pin 17 Parking Lights NEG 2 Black/Blue (alternate location) - Headlight Switch, white 20 pin plug, pin 18 Hazards Green - BIU behind dash fuse box, white 31 pin plug (D), pin 18 Turn Signal (Left) White/Red + Dash Fuse Box, white 20 pin plug, pin 20 Turn Signal (Right) Gray + Dash Fuse Box, white 20 pin plug, pin 3 Headlight Blue - BIU behind dash fuse box, white 35 pin plug (B), pin 34 AutoLights Blue/Orange Cut BIU behind dash fuse box, white 35 pin plug (B), pin 16 Reverse Light Brown or Yellow/Red + Passenger Kick, white 20 pin plug, pin 4 Reverse Light 2 Brown (alternate location) + Radio, white 28 pin plug, pin 2 Left Front Door Trigger Blue - Driver Kick, white 20 pin plug, pin 15 Left Front Door Trigger 2 Blue (alternate location) - BIU behind dash fuse box, white 35 pin plug (C), pin 14 Right Front Door Trigger Blue/Orange - BIU behind dash fuse box, white 35 pin plug (C), pin 13 Left Rear Door Trigger Yellow/White - Driver Kick, white 20 pin plug, pin 16 Left Rear Door Trigger 2 Yellow/White (alternate location) - BIU behind dash fuse box, white 35 pin plug (C), pin 24 Right Rear Door Trigger White/Red - BIU behind dash fuse box, white 35 pin plug (C), pin 25 Dome Light Green/Yellow - BIU behind dash fuse box, white 35 pin plug (C), pin 4 Trunk/Hatch Pin Yellow/Blue - BIU behind dash fuse box, white 35 pin plug (C), pin 33 Hood Pin Yellow/Black (with remote start) - Remote Start Module Connector above brake pedal, white 8 pin plug, pin 5 Trunk/Hatch Release Green/Red - BIU behind dash fuse box, white 35 pin plug (C), pin 10 Trunk-Hatch Release2 Green/Red (alternate location) - Trunk Lid Opener Switch, gray 4 pin plug, pin 2 Trunk Release Motor Black Reverse BIU behind dash fuse box, white 31 pin plug (D), pin 7 Tachometer Green AC Keyless Access Module right of BIU, white 18 pin plug, pin 17 Neutral Safety Green/Black (M/T) - ECM next to air cleaner assembly, brown 48 pin plug, pin 33 Clutch Pedal Gray + Keyless Access Module right of BIU, white 18 pin plug, pin 10 Clutch Pedal 2 Lt. Green (alternate location) + Clutch Switch, white 2 pin plug, pin 2 Fuel Pump Red/Black + Passenger Kick, white 20 pin plug, pin 5 Rear Defroster Violet - Latched BIU behind dash fuse box, white 34 pin plug (A), pin 26 Mirror Defroster (same as rear defroster) Wiper Deicer Blue - Latched BIU behind dash fuse box, white 31 pin plug (D), pin 9 Left Front Heated Seat Red/Blue (LO); Lt. Green (HI) Reverse Seat Heater Switch, blue 4 pin plug, pin 4 (LO); pin 1 (HI) --or-- white 8 pin plug, pin 1 (LO); pin 4 (HI) Right Front Heated Seat Red/White (LO); White (HI) Reverse Seat Heater Switch, white 4 pin plug, pin 4 (LO); pin 1 (HI) --or-- white 8 pin plug, pin 3 (LO); pin 8 (HI) Speed Sense Pink AC Radio, white 28 pin plug, pin 17 Brake Wire Lt. Green (CVT) + Keyless Access Module right of BIU, white 18 pin plug, pin 18 Brake Wire 2 Brown (M/T) + Dash Fuse Box, white 20 pin plug, pin 15 Parking Brake Gray (w/o EPB); Yellow/Green (with EPB) - Driver Kick, white 20 pin plug, pin 14 (w/o EPB); pin 16 (with EPB) Horn Trigger Red - BIU behind dash fuse box, white 34 pin plug (A), pin 24 Horn Trigger 2 Red (alternate location) - Horn Switch, white 14 pin plug, pin 9 Wipers Red/Blue (LO); Black/Blue (HI) + Wiper Switch, white 10 pin plug, pin 3 (LO); pin 4 (HI) Wipers Protection Green/Black (ignition) Cut Wiper Switch, white 10 pin plug, pin 2 Left Front Window (Up/Down) Blue/Red - Blue/Green A Power Window Main Switch, white 3 pin plug, pins 3 - 1 Right Front Window (Up/Down) Red/Black - Blue A Passenger Power Window Switch, white 12 pin plug, pins 3 - 2 Left Rear Window (Up/Down) Green/Red - Black/Yellow A Driver Kick, white 28 pin plug, pins 4 - 10 Right Rear Window (Up/Down) Blue - Blue/Yellow A Driver Kick, white 28 pin plug, pins 7 - 8 Sun Roof (Open/Close) Blue - Red (function with ignition on only) + Sunroof Switch, white 5 pin plug, pins 1 - 4 Radio 12V Blue/Red + Radio, white 10 pin plug, pin 4 Radio Ground Black - Radio, white 10 pin plug, pin 7 Radio Ignition Yellow + Radio, white 10 pin plug, pin 3 Radio Illumination Violet (parking lights); Black/White (dimmer) +,- Radio, white 10 pin plug, pin 10 (parking lights); white 6 pin plug, pin 5 (dimmer) Power Antenna Yellow + Radio, white 10 pin plug, pin 8 Left Front Speaker (+/-) White - Blue --or-- White - Black --or-- Green - Black +,- Radio, white 10 pin plug, pins 6 - 2 Right Front Speaker (+/-) Green - Brown --or-- Red - Brown --or-- White - Red +,- Radio, white 10 pin plug, pins 5 - 1 Left Rear Speaker (+/-) Red - White --or-- Pink - Blue +,- Radio, white 6 pin plug, pins 6 - 2 Right Rear Speaker (+/-) Red - Gray +,- Radio, white 6 pin plug, pins 3 - 1 Left Front Speaker - With Amp Blue/White - Green +,- Amplifier under rear deck, white 10 pin plug, pins 10 - 4 Right Front Speaker - With Amp Blue - Pink +,- Amplifier under rear deck, white 10 pin plug, pins 3 - 9 Left Front Tweeter - With Amp Black/Blue - White/Blue +,- Amplifier under rear deck, white 12 pin plug, pins 9 - 3 Right Front Tweeter - With Amp White/Black - Yellow +,- Amplifier under rear deck, white 12 pin plug, pins 2 - 1 Left Rear Speaker - With Amp Green/Yellow - Violet +,- Amplifier under rear deck, white 10 pin plug, pins 2 - 6 Right Rear Speaker - With Amp Yellow - Lt. Green +,- Amplifier under rear deck, white 10 pin plug, pins 8 - 7 Subwoofer - With Amp Black/Red - White/Red (coil 1); Brown - Green (coil 2) +,- Amplifier under rear deck, white 12 pin plug, pins 4 - 10 (coil 1); pins 5 - 12 (coil 2) Aux. Audio Input Left (+/-) Blue - (shield) +,- Radio, white 28 pin plug, pins 28 - 27 Aux. Audio Input Right (+/-) Pink - (shield) +,- Radio, white 28 pin plug, pins 26 - 27 Rearview Camera Video Red - (shield) +,- Radio, white 28 pin plug, pins 12 - 13 --or-- white 5 pin plug, pins 3 - 4 ------------- Gary Sather |
| Print Page | Close Window |