Vehicle Wiring Details for a
2003 Honda Pilot
Item Wire Color Polarity Wire Location
12V white Positive (+) ignition harness
Starter black/white Positive (+) ignition harness
Starter 2 none
Ignition black/yellow Positive (+) ignition harness
2nd Ignition KEYSENSE blue/black Negative (-) ignition harness
3rd Ignition none
Accessory yellow Positive (+) ignition harness
Accessory 2 white/black Positice (+) ignition harness
Tachometer blue AC tach test connector
Power Door (Lock)
Wiring Diagram for
[Negative (-)] Door Lock
blue/green *1 Negative (-) passenger mux unit *2
Power Door (Unlock)
Wiring Diagram for
[Negative (-)] Door Unlock
black/red Negative (-) passenger mux unit *2
Door Trigger black/white Negative (-) interior light switch on dash
Dome Supervision
Wiring Diagram for
[] Dome
use door trigger
Parklight Positive red/black Positive (+) driver kick panel
Parklight Negative red/yellow Negative (-) headlight switch
Left Front Window
Right Front Window
Left Rear Window
Right Rear Window
Trunk/Hatch Pin common with doors
Hood Pin yellow Negative (-) hood switch or *3
Trunk/Hatch Release
Wiring Diagram for
[] Trunk/Hatch
Factory Alarm
arms with lock
Factory Alarm
disarms with unlock
Horn lt. green/blue Negative (-) steering column
Brake green/red Positive (+) parking brake switch
Door Motor
white/blue passenger mux unit [2]
Door Motor
black/red passenger mux unit [2]
Disarm blue passenger kick panel [2]
Disarm No Unlock
Additional Info:
[1] Meter these wires when turning the key in the passenger door cylinder [2] The passenger MUX unit is attached to the passenger side fuse box in the passenger kick panel. [3] Also found at the driver mux module. This is located on the driver side fuse box in the drivers kick panel.

ATTENTION: This wiring information is being provided free of charge and on an "as is" basis, without any representation or warranty. It is your responsibility to verify any circuit before interfacing with it by using a digital multimeter. GNU Industries, Inc. assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. GNU assumes no responsibility resulting from an improper installation, even in reliance upon this information.

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