03 Mercury Grand Marquis, Alarm/Remote Start/Stereo Wiring
Printed From: the12volt.com
Forum 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=16701
Printed Date: March 28, 2024 at 6:08 AM
Topic: 03 Mercury Grand Marquis, Alarm/Remote Start/Stereo Wiring
Posted By: phredman
Subject: 03 Mercury Grand Marquis, Alarm/Remote Start/Stereo Wiring
Date Posted: July 25, 2003 at 8:17 PM
Has anyone installed a remote start on 03 mercury grand marquis? if so,can I get a more detailed wiring diagram on this vehicle? For instance,2 wires act like starter wires,the small gauge RED / lt blue and the GREEN/ purple ? I cant get the dash to power up too. thanks for any info...
Replies:
Posted By: tjdurham
Date Posted: July 26, 2003 at 12:09 AM
accy wires grey / YELLOW and pink/black and black /green all 3 need powering up relay isolate them though your starter wire should be white /pink if not there its the red /blue
------------- tj
Posted By: ViperATC5
Date Posted: July 26, 2003 at 5:20 PM
| ITEM | WIRE COLOR |POL| WIRE LOCATION |
| 12V|brown & lt. green |+ |ignition harness |
| STARTER|RED / lt. blue |+ |ignition harness |
| IGNITION|WHITE/ yellow |+ |ignition harness |
| ACCESSORY|gry/yel & blk/lt grn|+ |ignition harness |
| SECOND ACCESSORY|pink/black |+ |ignition harness |
| POWER LOCK|pink / YELLOW |*1 |driver kick, door harness |
| POWER UNLOCK|pink/lt. green |*1 |driver kick, door harness |
| LOCK MOTOR|pink/black |5wi|driver kick, door harness |
| UNLOCK MOTOR|RED / orange |5wi|driver door motor in door |
| DISARM DEFEAT|pink/orange |5wi|driver kick, harness to rear|
| PARKING LIGHTS +|brown | |pin 4, blk plug @ LCM *2 |
| PARKING LIGHTS -|WHITE/ black | |pin 13, gry 16P plug @ LCM*2|
| HEADLIGHTS|RED / yellow |- |pin 10, gry 16P plug @ LCM*2|
| DOOR TRIGGER|dk blue & blk/org *3|- |LCM *2 |
| DOME SUPERVISION|use door trigger | | |
| TRUNK/HATCH PIN|BROWN / white |- |pin 5, gry 16P plug @ LCM *2|
|TRNK/HTCH RELEASE|purple / YELLOW *4 |5wi|driver kick, harness to rear|
| TACHOMETER|NOT red or RED / grn | |any ignit. coil or injector |
| SPEED SENSE|gray/black | |pin 5, gry 22P plug @ LCM *2|
| BRAKE WIRE|lt. green |+ |brake pedal switch |
| HORN TRIGGER|dk. blue |- |steering column |
| WIPERS|dk. blue/orange |- |steering column |
| LF WINDOW UP/DN|wht/blk - yellow |A |driver window switch |
| RF WINDOW UP/DN|wht/yel - tan/lt blu|A |driver kick panel |
| LR WINDOW UP/DN|gry/org - yel/lt blu|A |driver kick panel |
| RR WINDOW UP/DN|yel/blk - RED / blk |A |driver kick panel |
| SUN RF OPN/CLOSE|dk green - lt green |A |sun roof motor |
| SUN ROOF LIMIT| |- |sun roof motor |
| RADIO 12V|PURPLE / lt. blue |+ |radio harness |
| RADIO GROUND|BLACK/ lt. green |- |radio harness |
| RADIO SWITCH|yellow/black |+ |radio harness |
| RADIO ILLUMINATE|lt. blu/red (dimmer)|+ |radio harness |
| LF SPEAKER|org/lt grn-lt blu/wh| |radio harness |
| RF SPEAKER|wht/lt grn - grn/org| |radio harness |
| LR SPEAKER|gry/lt blu - tan/yel| |radio harness |
| RR SPEAKER|org/red - brn/pnk | |radio harness |
Notes:
NOTE: This vehicle is equipped with PATS (Passive Anti-Theft System). Use Directed module 555U to bypass during remote start. *1 Without keyless entry the door locks are 5wi (reverse polarity). With keyless entry they are positive trigger. *2 The LCM (Lighting Control Module) is to the right of the steering column. *3 Blue is the driver door trigger wire, it is in pin 11, gray 22 pin plug. BLACK/ orange is the three passenger doors, it is in pin 11, gray 16 pin plug. Use both wires and diode isolate each. *4 The fuel door release is WHITE/ pink (+) in the driver kick, harness to rear.
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