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'00 Mustang door hookups

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=55566
Printed Date: July 12, 2025 at 4:01 AM


Topic: '00 Mustang door hookups

Posted By: treman
Subject: '00 Mustang door hookups
Date Posted: May 11, 2005 at 8:43 PM

Putting a 742T Hornet alarm into my 2000 Mustang. I need a little help wiring it up to my door locks. I am not sure which wire goes where. I kno there will be 2 wires for a constant 12 volts for each relay. I just need to find out if its the #30 common wires that are the 12+ constant or the #87 normally open lock and unlock relay wires are the 12+ constant.



Replies:

Posted By: OhioMike1101
Date Posted: May 11, 2005 at 9:35 PM
 
12volts yellow & lt. GREEN/ purple  +  ignition harness
Starter WHITE/ pink  +  ignition harness
Second Starter N/A    
Ignition RED / lt. green  +  ignition harness
Second Ignition N/A    
Third Ignition N/A    
Accessory gray / YELLOW and RED / black  +  ignition harness
Second Accessory BLACK/ lt. green  +  ignition harness
Keysense BLACK/ pink  -  ign harn, 26 pin plug, pin 9 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Power Lock lt. green  +  20 pin plug, pin 20 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Power Unlock purple  +  20 pin plug, pin 18 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Lock Motor RED / white  5wi 20 pin plug, pin 9 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Unlock Motor RED / orange  5wi 20 pin plug, pin 7 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Parking Lights+ brown  +  26 pin plug, pin 7 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Parking Lights- WHITE/ black  -  26 pin plug, pin 11 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Hazards same as turn signals    
Turn Signal(L) lt grn/wht(F), lt grn/org(R)  +  steering column
Turn Signal(R) wht/lt blu(F), org/lt blu(R)  +  steering column
Reverse Light BLACK/ pink  +  26 pin plug, pin 20 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Door Trigger yel/black (L), gray/red (R)  -  20P plg, pin 13 & 5 at GEM
Notes: Use yellow/black for the driver door trigger and gray/red for the passenger door. Use both wires and diode isolate each from the GEM module, refer to DirectFax document 1076 for wiring information.

The GEM (Generic Electronic Module) is located above the driver kick panel.
Dome Supervision BLACK/ white  +  20 pin plug, pin 3 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Trunk/Hatch Pin BROWN / white  -  12 pin plug, pin 3 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.

The hatch pin needs to be diode isolated from the GEM module. Refer to DirectFax document 1076 for wiring information.
Hood Pin N/A    
Trunk/Hatch Release pink/lt. green  -  26 pin plug, pin 25 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Power Sliding Door N/A    
Factory Alarm Arm arms on lock with door open    
Factory Alarm Disarm dk. GREEN/ purple  -  20 pin plug, pin 16 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Disarm No Unlock see factory alarm disarm    
Tachometer NOT red or WHITE/ lt. blue  ac  ignition coil or coil pack
Wait to start N/A    
Brake Wire RED / lt. green  +  brake pedal switch
Parking Brake purple / YELLOW or lt. blu/blk  -  12 pin plug, pin 4 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Horn Trigger yellow/lt. green  -  26 pin plug, pin 12 at GEM
Notes: The GEM (Generic Electronic Module) is located above the driver kick panel.
Memory Seat 1 N/A    
Memory Seat 2 N/A    
Memory Seat 3 N/A    
posted_image
Interface Module:Category:
Required:
Yes
Type:
PATS
Part #: 555P, 555F, 556U, or 555U




Posted By: mo12v
Date Posted: May 11, 2005 at 9:58 PM

2 SPDT RELAYS:

Lock:
PIN 87 & 86 = 12 Volt Postive Constant
PIN 85 = Lock Wire from Alarm
PIN 30 = Pink / Yellow Factory Wire (or alternate)

UNLock:
PIN 87 & 86 = 12 Volt Positive Constant
PIN 85 = UNLock Wire from Alarm
PIN 30 = Pink / L Green Factory Wire (or alternate)

Power LockPINK / YELLOW14 PIN CONNECTOR HIGH **
Power UnlockPINK/L GREENIN PASS KICK
** Doorlock Wires Can Also Be Found As LIGHT GREEN (+) For Lock And VIOLET (+) For Unlock At Grey 18 Pin Connector In Driver Kick Panel ..............Positive Pulse Door Locks



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MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.




Posted By: KarTuneMan
Date Posted: May 13, 2005 at 12:40 PM
For basic, and I mean BASIC relay wiring.....look at it this way 85 and 86 are the controlers of the relay, they give it juice to work....they will allways be the same12V, or ground.....doesnt matter which pin gets what, they jusy need both.  87 and 30 get "connected" when the relay is activated. Whatever you put to 87, 30 will become! Either ground OR 12volts. A relay is just a "switch" that  you control.

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