Wiring Diagram For 1988 Ford Ranger Alt

Resource – (Chilton & Haynes) – Wires broke down by color and diagram

Headlights 1983 – 1989:

Black Wire – Ground

Black With Orange Stripe Wire – Hot At All Times

Light Green With Black Stripe Wire – High beam & High Beam Indicator

Red With Black Stripe Wire – Low Beam & Lamp Out Warning

Red With Yellow Stripe Wire – From Main Light Switch To Dimmer Switch

1990 & Later Models:

Black Wire – Ground

Dark Blue With Orange Stripe Wire – Hot To Light Switch

Red With Yellow Stripe Wire – Main Light Switch To Dimmer Switch

Purple Wire – High beam

Red With Black Stripe Wire – Low Beam And Daytime Running Lights

Tan With White Stripe Wire – High beam Indicator

Exterior Lights 1983 – 1989:

Black Wire – Ground

Brown Wire – Courtesy Lamps, Warning Chime, Marker Lamps, Taillight, License Plate Light

Back-Up Lights:

Black  Wire – Ground

Black With Pink Stripe Wire – Positive

Purple With Orange Stripe Wire – Power To Neutral Safety & Back-Up Switch

Dome Cargo Lights 1983 – 1988:

Black  Wire – Ground

Black With Light Blue Stripe Wire – Hot To Dome Lamp From Door Jamb Switch

Black With Pink Stripe Wire –  Hot To Cargo Lamp And Dome Lamp

Light Green With Yellow Stripe Wire –  To Glove Box , Door Jamb Switch, Digital Clock, Map Light, Under hood Light

Red With Pink Stripe Wire – Ignition Key/Safety Belt/Lamps "On" Warning

Tan With White Stripe  Wire – Hot At All Times To Light Switch

Dome Cargo Lights 1984 – 1988 (Bronco II):

Black Wire – Ground

Black With Light Blue Stripe Wire – To Dome & Cargo Lamp From Door Jamb Switch

Light Green With Yellow Stripe Wire – To Glove Box, Power To Door Jamb Switch, Cargo Door Switch, Under hood Lamp, Cargo Lamp, Map Lamp, Digital Clock (Hot At All Times From Fuse Panel)

Red With Pink Stripe Wire – Ignition Key/ Safety Belt/ Headlight "On" Warning Buzzer

Tan With White Stripe  Wire – Hot At All Times From Fuse Panel To Light Switch

Turn Stop / Hazard Lights:

Light Blue Wire – From Turn Signal Flasher To Multi Function Switch To Be Split To Lights

Light Green Wire – From Stop Light Switch To Multi Function Switch To Be Split To Lights

Light Green With Orange Stripe Wire – Left Rear Turn/Stop Lights (Trailer Also)

Light Green With Red Hash Marks Wire – Power To Stop Light Switch

Light Green With White Stripe Wire – Left Front Turn Signal & Indicator

Orange With Light Blue Stripe Wire – Right Rear Turn/Stop Lights (Trailer Also)

Purple With Orange Hash Marks Wire – Hot In Run From Fuse Block To Turn Signal Flasher

Red With White Hash Marks Wire – Hot At All Times To Hazard Flasher

White With Light Blue Stripe Wire – Right Front Turn Signal And Indicator

White With Red Hash Marks Wire – From Hazard Flasher To Multi Function Switch To Be Split To Lights

Instrument Panel Lights 1983 – 1989:

Black Wire – Ground

Light Blue With Red Stripe Wire – From Light Switch To Dash Lights

Orange With Black Stripes  Wire – From Light Switch To Radio

Instrument Panel Lights 1990 – 1991

Black  Wire – Ground

Dark Blue With White Stripes Wire – Ground From Heater Control

Light Blue With Red Stripes Wire – From Light Switch To Dash Lights

Orange With Black Stripes  Wire – From Light Switch To Radio

Power Windows

Black  Wire – Ground

Light Blue With Black Stripe Wire – Power To Window Switch Hot In Accessory Or Run From Fuse Panel

Red With Black Stripe Wire – Right Window Down

Yellow  Wire – Left Window Up

Yellow With Black Stripe Wire – Right Window Up

White With Black Stripe Wire – Left Window Down

Power Door Locks 1985 – 1988

Black Wire – Ground

Black With White Stripe Wire – Hot At All Times to lock relays

Pink With Black Stripe Wire – From Lock Relay To Door Lock Motor

Pink With Light Green Stripe Wire – From Door Lock Switch To Unlock Relay

Pink With Orange Stripe Wire – From Unlock Relay To Door Lock Motor

Pink With Yellow Stripe Wire – From Door Lock Switch To Lock Relay

Power Door Locks 1989 – 1991

Black Wire – Ground

Black With White Stripe Wire – Hot At All Times To Door Control Switch

Pink With Black Stripe Wire – From Switch To Unlock Motor

Pink With Light Green Stripe Wire – Lock To Lock Between Door Lock Switches

Pink With Orange Stripe Wire – From Switch To Lock Motor

Pink With Yellow Stripe Wire – Unlock To Unlock Between Door Unlock Switches

Charging System / Power Distribution 1983 – 1985:

Black Wire – Ground

Black With Orange Stripe Wire – (Main Power) Power To (B) on Alternator (Stator And Rectifier Assembly)

Light Green With Red Stripe Wire – Voltage Regulator To Red With Light Green Wire Feeding Fuse Block And Ignition Switch

Orange With Light Blue Stripe Wire – From Alternator Field (F) To Voltage Regulator

Red With Orange Stripe Wire – To Ammeter From Black Wire With Orange Stripe

Yellow Wire – Power To Ignition Switch And Fuse Block

Yellow With Light Green Stripe Wire – To Ammeter From Black Wire With Orange Stripe

Yellow With White Dots Wire – From Black Wire With Orange Stripe To Voltage Regulator Also To Radio Noise Capacitor

White With Black Stripe Wire – Alternator (S) To Voltage Regulator And Choke Heater On 2.0 Liters

Charging System / Power Distribution 1986 – 1988:

Black Wire – Ground

Black With Orange Stripe Wire – Power From Starter Relay To Red With Orange Stripe Wire, Yellow With Light Green Stripe Wire – Yellow Wire, Yellow With White Stripe Wire, Alternator, And Fuse Block

Brown Wire With Pink Stripe – From Start Ignition Position To Light Green With Red Stripe Wire

Light Green With Red Stripe Wire – Alternator To Light Green With Red Stripe Wire

Red With Light Green Wire – From Ignition Run Position To Light Green With Red Stripe Wire

Red With Orange Stripe Wire – From Black With Orange White To Ammeter

Yellow Wire – From Black With Orange Stripe Wire To Ignition Switch And Fuse Panel

Yellow With Light Green Stripe Wire – From Black Wire With Orange Stripe To Ammeter

Yellow With White Wire – From Black With Orange Stripe Wire To Alternator

Charging System 1991

Black Wire – Ground

Black With Orange Stripe Wire – Power Distribution Box To Alternator

Gray With Yellow Stripe Wire – From Ignition Run To Fuse Panel

Light Green With Red Stripe Wire – From Voltage Regulator To Charge Indicator Light

Orange With Black Stripe Wire – Power Distribution Box To Fuse Panel

Orange With Light Blue Stripe Wire – From Starter Relay To Alternator

Red Wire – Battery Positive To Power Distribution Box

Yellow With White Stripe Wire – From Power Distribution Box To Voltage Regulator

White With Black Stripe Wire – From Alternator To Built In Voltage Regulator

Radio:

Click HERE  for radio and speaker wiring diagrams.

Black Wire – Ground

Black With White Stripe Wire – Right Rear Speaker

Light Blue With Red Stripe Wire – From Light Switch To Radio (light) (Headlights)

Light Green With Yellow Stripe Wire – Hot At All Times To Radio

Orange With Black Stripe Wire – From Light Switch To Radio (Light) (Parking)

Orange With Red Stripe Wire – Right Rear Speaker

Red Wire – To Ground With Black Wire

Yellow With Black Stripe Wire – Hot In Accessory Or Run To Radio

(With Convenience Power Group)

Dark Green With Orange Stripe Wire – Right Door Speaker

Light Blue With White Stripe Wire – Left Door Speaker

Orange With Light Green Stripe Wire – Left Door Speaker

White With Light Green Stripe Wire – Right Door Speaker

(Without Convenience Power Group)

Dark Green With Orange Stripe Wire – Right Door Speaker

Light Blue With White Stripe Wire – To Dark Green With Orange Stripe Wire To Left Door Speaker

Orange With Light Green Stripe Wire – To White With Light Green Wire To Left Door Speaker

Pink With Light Green Stripe Wire – Left Rear Speaker

Tan With Yellow Stripe Wire – Left Rear Speaker

White With Light Green Stripe Wire – Right Door Speaker

Electronic Shift Control

Black Wire – Ground

Black With Orange Stripe Wire – From Electric Shift Control Module To Ground

Black With White Stripe Wire – Hot At All Times To Electric Shift Control Module

Brown Wire – Electric Shift Control Module To Transfer Case Assembly Shift Motor

Brown With White Stripe Wire – Electric Shift Control Switch (4-Lo) To Electric Shift Control Module And Instrument Cluster. Also Electric Shift Control Switch To Transfer Case Magnetic Clutch Coil

Dark Blue Wire – Electric Shift Control Switch (4-High) To Electric Shift Control Module

Gray Wire – From Electric Shift Control Switch (4-High) To Electric Shift Control Module And Instrument Cluster

Light Green Wire – Electric Shift Control Module To Transfer Case Speed Sensor

Light Blue Wire – From Electric Shift Control Switch Gray Wire (From 4-High) To Instrument Cluster And Rear Anti Lock Brake Module

Orange Wire – Electric Shift Control Module To Transfer Case Assembly Magnetic Clutch Coil

Orange With Light Blue Stripe Wire – Electric Shift Control Switch (4-Lo) To Electric Shift Control Module

Orange With White Stripe Wire – Electric Shift Control Module To Transfer Case Magnetic Clutch Coil

Pink Wire – To Transmission Neutral Safety Switch

Purple With Yellow Stripe – Electric Shift Control Module To Transfer Case Magnetic Clutch Coil

Red With Light Blue Stripe – From Neutral Safety Switch To Starting System

Red With White Stripe Wire – Neutral Safety Switch To Electric Shift Control Module

Red With Yellow Stripe Wire – Hot In Start Or Run Position To White With Purple Stripe Wire To Electric Shift Control Module

White Wire – Electric Shift Control Module To Transfer Case Magnetic Clutch Coil

Yellow With White Stripe Wire – Electric Shift Control Module To Transfer Case Assembly Magnetic Clutch Coil

Yellow Wire – Electric Shift Control Module To Transfer Case Assembly Shift Motor

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Source: https://www.therangerstation.com/tech/ford-ranger-wiring-1983-1991/

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