2003 Ford F250 HD

|       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |
|              12V|yellow & lt. grn/pur|+  |ignition harness            |
|          STARTER|green               |+  |ignition harness            |
|         IGNITION|RED / lt. green       |+  |ignition harness            |
|  SECOND IGNITION|gray / YELLOW         |+  |ignition harness            |
|        ACCESSORY|RED / black           |+  |ignition harness            |
| SECOND ACCESSORY|blue/lt. green      |+  |ignition harness            |
|       POWER LOCK|*1                  |   |*1                          |
|     POWER UNLOCK|*1                  |   |*1                          |
|       LOCK MOTOR|pink/black          |   |VSM *2                      |
|     UNLOCK MOTOR|RED / orange          |   |VSM *2                      |
|    DISARM DEFEAT|pink/orange         |   |VSM *2                      |
| PARKING LIGHTS +|brown               |   |headlight switch            |
|       HEADLIGHTS|RED / yellow          |+  |headlight switch            |
|     DOOR TRIGGER|BLACK/ lt. blue      |+  |either kick panel           |
| DOME SUPERVISION|use door trigger    |   |                            |
|  FCTRY ALARM ARM|                    |   |                            |
|FCTRY ALRM DISARM|                    |   |                            |
|       TACHOMETER|*3                  |   |ignition coils              |
|      SPEED SENSE|gray/black          |   |instrument cluster or *4    |
|       BRAKE WIRE|lt. green           |+  |brake pedal switch          |
|     HORN TRIGGER|blue                |-  |steering column or VSM *2   |
|           WIPERS|blue/orange         |-  |steering column             |
|  LF WINDOW UP/DN|wht/blk - tan/lt blu|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           |
|        RADIO 12V|lt. GREEN/ purple    |+  |radio                       |
|     RADIO GROUND|BLACK/ lt. green     |-  |radio                       |
|     RADIO SWITCH|pink                |+  |radio                       |
| RADIO ILLUMINATE|lt blue/red (dimmer)|+  |radio                       |
|       LF SPEAKER|org/lt grn-lt blu/wh|   |radio                       |
|       RF SPEAKER|wht/lt grn - grn/org|   |radio                       |
|       LR SPEAKER|gry/lt blu - tan/yel|   |radio                       |
|       RR SPEAKER|org/red - brn/pnk   |   |radio                       |

Notes:

If it is a diesel, get the tach at the left side of the steering column just below the fuse panel.  You will see a big wire harness with 4 wires taped to the side of it use the GREEN / WHITE. 6cyl  It might also be there for a gas but I haven't done a gas yet.

Try it first to see if you acually to need to wake up the GEM.  The way to test it is roll down the window, lock the doors and close them.  Come back in a 5 minutes and press unlock.  If the doors unlock you will not have to wake up the GEM,  IF they do not unlock you will have to.  To wake it up you need to cut the yellow/black in the drivers door boot and add in a relay.  30 to one side of wire 87a to other and 86 to fused 12v, 85 to pulse before unlock.  Also hook up a wire that is pulse after remote start shutdown to shut off the radio after the remote start shuts off.

I have done 3 2003's that didn't need the GEM wake up and 4 that did.  All of the 2002's I have done needed it.  Seems like it must be something that changed recently.

Memphisman,

Is your truck a diesel? Are you putting in autostart? I am in the middle of my install; a Viper 550 ESP in my 2002 F250 SD diesel it will eventually have autostart, but at this time I have just the alarm in place. I have a note from another guy that has the same truck and alarm as mine and he says that the dome light delay, when used for the door trigger is a problem for the autostart. It seems that when he auto starts, the dome light comes on and triggers the alarm. Anyway, would you please keep me posted on your install. Thanks

Hi,

I was getting ready to post a message for some of the info above; thanks for answering and helping me vicariously :)

In addition to the above questions, I would like to ask a few.  Firstly, I have a few questions as to what some abbreviations mean.  What does GEM and ECM stand for?  Im sure it sounds like a silly question, but I am a bit rusty and dont recall having ever learned any of the above terms.

Also, my instal manual notes that I need bypass the transponder; is this so and what is the reason for this? 

Aside from the above, is there anything else I should be forewarned about or reccomendations?

Thanks guys,

Dave

Generic Electronic Module

There is no transponder on the super duty trucks.