The following article is actually parts of Honda Legend (88 – 90) workshop manual. Here you will find detail information, description, explanation, and illustration of Honda Legend and troubleshooting. Starts with special tools needed to perform the wiring and electrical-related works, troubleshooting precautions, symbols, wire color codes, relays and control unit locations. Below picture shows the relays and control unit location which consists of relay bracket, integrated control unit, power door lock control unit, PGM-FI main relay, sunroof relay, turn signal/ hazard relay, rear window defogger, cruise control unit and dash fuse box.

honda legend wiring diagram 

Index to Circuits and Systems:  

Alternator
Antenna, Power
Charging System
Cigarette Lighter
Clock
Cooling Fan Control
Cruise Control
Defogger, Rear Window
Dim-Dip Light System
Distributor
Fuse Box
Gauges:
    Circuit Diagram
    Coolant Temperature Gauge
    Fuel Gauge
    Speedometer
    Tachometer
Grounds:
    Distribution
    Locations
Horns
Ignition Switch
Ignition System
Ignition Timing Control
Indicators:
    High Beam Indicator
    Safety Indicator
    Shift Lever Position Indicator
    Turn Signal Indicator
Integrated Control Unit
Lights, Exterior:
    Back-up Lights
    Brake Lights
    Fog Lights, Rear
    Hazard Lights
    Headlights
    Taillights
    Turn Signal Lights

Lights, Interior:
    Courtesy Lights
    Dashlight Brightness Control
    Dome Light
    Entry Light Timer
    Fuse Box Light
    Glove Box Light
    Map Light, Front
    Truck Light

Lighting System
Locks:
    Keyless
    Power
Mirrors, Power
Opener, Trunk
Relay Box
Relay Locations
Seat Belt Presenter, Power
Seat Heaters
Seat, Power
Spark Plugs
Starting System
Stereo Sound System
Sunroof
Turn Signal/ Hazard Lights
Warning System:
    Brake Bulb Failure
    Brake Circuit Failure
    Brake Warning Light
    Hazard Warning Light
    Light-on Beeper
    Low Fuel Warning Light
    Oil Pressure/ Level Warning Light
    Washer Level Warning Light

Washers:
    Headlights
    Windshield
Windows, Power
Wipers:
    Headlights
    Windshield
Wires and Harnesses:
    Wire Colour Codes
    Wire Harness Routing

Find the Honda Legend’88 and Troubleshooting here – http://downloads.hondatech.info/Auto/Manuals/Legend/Honda_Legend_1988-90.zip – free download file source: hondatech.info.



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