I agreed with Elray. You should test every wire and regardless what others tell you. Here is another wiring info for your reference.
Good luck
Ford » Explorer » 2000
ITEM WIRE COLOR POL LOCATION INFOTECH #
12 VOLTS yellow + ignition harness
IGNITION 1 GREEN/ purple + ignition harness
Two wires each at switch, both are common, only need to power 1 each during remote start.
STARTER 1 RED / lt. blue + ignition harness
ACCESSORY 1 gray / YELLOW + ignition harness
Two wires each at switch, both are common, only need to power 1 each during remote start.
ACCESSORY 2 BLACK/ green + ignition harness
POWER LOCK pink / YELLOW - driver's kick panel
POWER UNLOCK pink/green - driver's kick panel
FACTORY ALARM ARM arms on lock
Arms on lock only with door open. It is necessary to send a signal to door trigger as well as lock to arm factory alarm.
FACTORY ALARM DISARM dk. GREEN/ purple - driver's kick panel
DISARM DEFEAT pink/orange driver's kick panel
You may also use the pink/green power unlock wire.
DOORLOCK MOTOR pink/black driver's kick panel
DOOR UNLOCK MOTOR RED / orange driver's kick panel
PARKLIGHTS POSITIVE PURPLE / white + driver's kick panel
Also found to be WHITE/ black at the rear of the switch.
PARKLIGHTS NEGATIVE WHITE/ purple - driver's kick panel
HEADLIGHT red / YELLOW + light switch
BRAKE lt.green + driver's kick, brake switch
DOOR PIN -
In the drivers door harness find yellow/black for the drivers door. In the drivers kick panel find lt. GREEN/ YELLOW for the drivers rear door. In the passengers kick panel find gray/red for the passenger front door, and pink/lt. blue for the passengers rear door. All four wires are negative trigger and must be diode isolated together. Refer to directfax document #1076 for wiring information.
HOOD PIN tan/lt.green - driver's kick panel
TRUNK PIN WHITE/ purple - driver's kick panel
DOMELIGHT SUPERVISION use door trigger
TACH tan / YELLOW pcm
The PCM is located at the top of the firewall towards the passenger side, the tan / YELLOW tach wire is also found at the back of the instrument cluster.
VSS gray/black A/C pcm
The PCM is located at the top of the firewall towards the passenger side, the tan / YELLOW tach wire is also found at the back of the instrument cluster.
WIPER wht & dk.blu/org + wiper motor or relay
Also found yellow/white (-) at the firewall connector.
HORN yellow/lt. green - steering column
ITEM NOTE INFOTECH #
Immobilizer Use DEI module 555F to over-ride during remote start.
Special Note Some models of this vehicle are equipped with PATS (Passive Anti Theft System). Use DEI module 555F to over-ride during remote start.