2000 Taurus

keypad has nothing to do with the PATS aka theft light. i use audiovox ASTCBM modules for my ford installs and they are made in the same factory as the 555u they just have a different vase. i have not had any cold start concerns and i am in michigan. are you trying to r/s the car with a key in the ignition? many fords can only read one key at a time. If you want to make sure it is the 555u take the key out of the 555u and put it in the ignition, do not turn it (if it is cut to your ignition) and try r/s the car.

Everything is working great now in my 2000 Ford Taurus. The only thing left is to hook up the wire for the door pins fo rthe alarm. This is the diagram someone sent me. Now I tried the common wire as it explains below but it didn't work. So can I hook it up to the domelight wire? If so, I guess I hook up my "Positive Door Switch Sensing Input"? and should I use a relay? I heard they false out or something. Not even sure what that means. Is there a diagram of this somewhere? Thanks for the help.

     ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |

|              12V|lt. GREEN/ purple    |+  |ignition harness            ||          STARTER|RED / lt. blue        |+  |ignition harness            ||         IGNITION|RED / lt. green       |+  |ignition harness            ||        ACCESSORY|gray / YELLOW         |+  |ignition harness            || SECOND ACCESSORY|BLACK/ lt. green     |+  |ignition harness            ||       POWER LOCK|pink / YELLOW         |-  |26 pin plug at GEM *1       ||     POWER UNLOCK|pink/ lt. green     |-  |26 pin plug at GEM *1       ||       LOCK MOTOR|pink/black          |   |top plug of fusebox         ||     UNLOCK MOTOR|RED / white           |   |top plug of fusebox         ||    DISARM DEFEAT|pink/orange         |   |top plug of fusebox         || PARKING LIGHTS +|brown               |   |headlight switch or fusebox ||       HEADLIGHTS|RED / yellow *2       |-  |headlight switch            ||     DOOR TRIGGER|BLACK/ orange *3     |-  |20 pin plug at GEM *1       || DOME SUPERVISION|BLACK/ lt. blue      |+  |top plug of fusebox         ||  TRUNK/HATCH PIN|*4                  |   |                            ||         HOOD PIN|tan/lt. green       |-  |26 pin plug at GEM *1       ||TRNK/HTCH RELEASE|*5                  |   |                            ||FCTRY ALRM DISARM|pink/white          |-  |26 pin plug at GEM *1       ||       TACHOMETER|tan / YELLOW          |   |PCM *6                      ||      SPEED SENSE|gray/black          |   |12 pin plug at GEM *1       ||       BRAKE WIRE|RED / lt. green       |+  |brake pedal switch          ||     HORN TRIGGER|purple or blue      |-  |steering column             ||           WIPERS|white(L), blu/org(H)|+  |wiper motor                 ||  LF WINDOW UP/DN|wht/blk - org/wht   |A  |drivers window motor        ||  RF WINDOW UP/DN|wht/yel - yel/red   |A  |drivers switch or kick panel||  LR WINDOW UP/DN|yel/lt blu - gry/org|A  |drivers switch or kick panel||  RR WINDOW UP/DN|yel/blk - RED / blk   |A  |drivers switch or kick panel||        RADIO 12V|                    |   |                            ||     RADIO GROUND|                    |   |                            ||     RADIO SWITCH|                    |   |                            || RADIO ILLUMINATE|                    |   |                            ||    POWER ANTENNA|RED / pink            |   |rear control unit *7        ||       LF SPEAKER|lt blu/wh-org/lt grn|   |rear control unit or speaker||       RF SPEAKER|grn/org - wht/lt grn|   |rear control unit or speaker||       LR SPEAKER|tan/yel - gry/lt blu|   |rear control unit or speaker||       RR SPEAKER|brn/pnk - org/red   |   |rear control unit or speaker|

Notes:

NOTE: This vehicle is equipped with PATS (Passive Anti-Theft System). Use DEI module 555U to over-ride during remote start.  *1 The GEM module is to the left of the steering column.  *2 The headlights are high current negative. Must use a relay.  *3 This wire controls the door ajar indicator on the dash, must cut the wire and diode isolate it from the instrument cluster. Can also use individual negative door trigger wires in the 26 pin plug at the GEM. They are: yellow/black (LF), gray/red (RF), lt. GREEN/ YELLOW (LR), and pink/lt blue (RR).  *4 On the sedans use BLACK/ pink (-) at the light in the trunk. On the wagons use WHITE/ purple (-) in the 26 pin plug at the GEM.  *5 With keyless entry it is purple / YELLOW (-) at the switch. Without keyless entry it is gray/red (+) at the switch. On the wagon, to unlock just the rear hatch use yellow/lt. green (-) in the 26 pin plug at the GEM.  *6 The PCM is on the passenger side firewall under the hood.  *7 The rear control unit is on the left side of the trunk.

Since it's your own car, you probably won't mind experimenting a bit. Just make a quick, temporary connection of your postive door trigger wire, to the BLACK/ blue wire at the underdash courtesy light. Give it a couple of days and see if it falses. If it does false, there is a fairly simple way to use one relay to fix it, but it is probably easier to just give it a try without it first.