01 Mustang GT Car Alarm Wiring

Hi im trying to find the + Horn wire and the +/- door trigger wires so the alarm car sense when the doors are open. Could someone help me out and post these wires please.

+ horn is going to be under the hood, locate at the horn itself. Most alarms have - output so double check.

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.


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