Vehicle Wiring Details for a
1998 Ford Ranger
Item Wire Color Polarity Wire Location
12V yellow Positive (+) ignition harness
Starter red/light blue Positive (+) ignition harness
Starter 2 none
Ignition lt. green/purple Positive (+) ignition harness
2nd Ignition none
3rd Ignition none
Accessory gray/yellow (x2) Positive (+) ignition harness
Accessory 2 black/lt green Positive (+) ignition harness
Tachometer tan/white ignition coil top motor [3]
Power Door (Lock)
Wiring Diagram for
[Negative (-)] Door Lock
pink/yellow Negative (-) either door harness or [1]
Power Door (Unlock)
Wiring Diagram for
[Negative (-)] Door Unlock
pink/green Negative (-) either door harness or [1]
Door Trigger [2] Negative (-) [2]
Dome Supervision
Wiring Diagram for
[Positive (+)] Dome
black/lt. blue Positive (+) drivers kick panel
Headlights red/yellow Positive (+) steering column
Parklight Positive brown Positive (+) drivers kick panel
Parklight Negative white/purple [1] Negative (-) drivers kick panel
Wipers white & dk. blu/orn Positive (+) wiper motor
Left Front Window
wht/blk - red drivers door motor
Right Front Window
tan/lt.blu - wht/yel drivers door harness
Left Rear Window
Right Rear Window
Trunk/Hatch Pin none
Hood Pin tan/lt. green Negative (-) drivers kick panel
Trunk/Hatch Release
Wiring Diagram for
[] Trunk/Hatch
Factory Alarm
arms w/ lock
Factory Alarm
dk. green/purple Negative (-) drivers kick panel
Horn yellow/lt. green Negative (-) steering column [1]
Brake lt. green Positive (+) drivers kick panel
Door Motor
pink/black drivers door harness
Door Motor
red/orange drivers door harness
Disarm pink/orange passenger door harness
Disarm No Unlock
Additional Info:
[1] These wires can also be found in the drivers kick panel in the large harness to the rear only if equipped with factory security. [2] Use yellow/black for the drivers door found in the drivers door harness, and gray/red for the passenger door found in the passenger door harness. Diode isolate each wire. There is a single wire available on models with factory security. It is lt. blue/white negative trigger found in the drivers kick in the large harness to the rear. [3] The ignition coil is located near the center of the motor on all models. [4] Under the hood at the top of the firewall towards the passenger side.

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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