Clifford Alarm Install

Here is some info that may be of some help to you!

Here is some info that may be helpful for you. Below is the electrical diagram of a 2003 GT Mustang 4.6 ignition switch circuit. For any after market electronic equipment installation, you want to stay away from tapping into the two red high-lited # 13-12 circuits. These circuits support your Constant Control Relay Module which operates your fuel pump module. You should be able to use the other 4 circuits which are high-lited in green. Your stock radio is tied into the 13-10 and 13-15 circuits. Notice that the Ford Manufacturer did not tie in your stock radio to the # 13-12 circuits. Many after market installers don't take the time to check which circuits they should or should not tap into, they simply take the feed from the most convenient 12 volt source. I'm still troubleshooting this matter, however, it is my gut feeling that by tapping into the #13-12 circuits, you are depriving your fuel pump system of the voltage it needs to operate properly. If fact, my son's fuel pump burnt out, and I'm quite sure it is because he had these after market companies who installed his after market deck player, video system and amps into these # 13-12 circuits, which lead to the demise of his fuel pump. So, don't take my word on this, because I'm still researching it, however, I recommend highly that you check it out for your self. Check out where the Ford Manufacturer has the stock radio and related equipment tied into. It won't be the # 13-12 circuits. For those who can't quite make out the colors of the wires for the # 13-12 circuits, they are the: Green/Yellow and the Red/Light Green. I have read numerous threads about people wondering why they have fuel pump related problems shortly after they had after market electronic equipment installed. I strongly believe this is why! Good luck and I hope this helps, Tommy.

when you are installing the alarm, depending on the year, the gem module likes to send out - pulses every so often. so be sure to diode isolate the brain from the pulses from the gem. and only allow - pulses from the doors for the alarm portion.
on the brain mounting location, there is a huge cavity behind/below the radio to mount your modules/relays. im trying to remember other hints to a mustang but im drawing a blank right now....

this is all info for a 99-04 security system.

12 VOLT CONSTANT YELLOW (+) and LIGHT GREEN/PURPLE (+) IGNITION SWITCH HARNESS
STARTER WHITE/PINK (+) IGNITION SWITCH HARNESS

IGNITION 1 RED/LIGHT GREEN (+) IGNITION SWITCH HARNESS
IGNITION 2 RED/BLACK (+) IGNITION SWITCH HARNESS

ACCESSORY/HEATER BLOWER 1 GRAY/YELLOW (+) IGNITION SWITCH HARNESS
ACCESSORY/HEATER BLOWER 2 BLACK/LIGHT GREEN (+) IGNITION SWITCH HARNESS


PARKING LIGHTS ( + ) BROWN (+) @ GEM, 26-Pin Plug, Pin 7, See NOTE *1
POWER LOCK LIGHT GREEN (TYPE A) @ GEM, 20 Pin Plug, Pin 20, See NOTE *1
POWER UNLOCK PURPLE (TYPE A) @ GEM, 20 Pin Plug, Pin 18, See NOTE *1
LOCK MOTOR WIRE RED/WHITE (+) @ GEM, 20-Pin Plug, Pin 9 , See NOTE *1

DOOR TRIGGER YELLOW/BLACK (-) and GRAY/RED (Right) (-) Use both, See NOTE *2 @ GEM, 20 Pin Plig, Pins 13 and 5, See NOTE *1 26500_MUSTANG_FORD DOOR PIN ISOLATION.pdf

DOMELIGHT SUPERVISION BLACK/WHITE @ GEM, 20Pin Plug, Pin 3, See NOTE *1
TRUNK RELEASE PINK/LIGHT GREEN @ GEM, 26 Pin PLug, Pin 25, See NOTE *1
SLIDING POWER DOOR N/A
HORN YELLOW/LIGHT GREEN (-) @ GEM, 26 Pin Plug, Pin 12, See NOTE *1

TACH Any wire that is NOT RED or WHITE/LIGHT BLUE @ any IGNITON COIL or FUEL INJECTORS
WAIT TO START LIGHT N/A
BRAKE RED/LIGHT GREEN (+) @ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM DARK GREEN/PURPLE (-) @ GEM, 20 Pin Plug, Pin 16, See NOTE *1
ANTI-THEFT FORD'S PATS ANTI-THEFT (Some Vehicles) TRANSPONDER SYSTEM TRANSPONDER @ IGNITION SWITCH TUMBLER
NOTES
NOTE *1 The GEM (Generic Electronic Module) is located ABOVE the DRIVERS KICK PANEL.


NOTE *2 This vehicle has 2 Door trigger wires at the GEM Module, when connecting to an ALARM SYSTEM,use both DOOR TRIGGER wire and DIODE ISOLATE, to connect.