Wiring Diagram Cluster

1990 Plymouth HORIZON A/C & Heater Wiring Diagram

Find A/C compressor clutch wiring, blower motor circuits, temperature control module paths, and refrigerant pressure switch schematics.

Matched Diagrams

29

Variant Used

Horizon L4-135 2.2L SOHC

Total Vehicle Diagrams

278

From Diagram To Fix

Use this wiring page as the jump point, not the dead end

Open the exact diagram, then move directly into the vehicle hub, the repair most likely tied to this system, or the code cluster that usually shows up with it.

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Vehicle Repair Hub

Step out of raw diagrams and into the full 1990 Plymouth HORIZON hub with repairs, specs, codes, and other systems already tied to this car.

View vehicle repair hub β†’

OEM source

Factory Manual Evidence

When there is no clean repair shortcut for this system, drop into the OEM manual sections that usually carry the authoritative test path.

1990 Plymouth HORIZON A L L Diagnostic Trouble Codes ( DTC ) β†’

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More System Pages for This Vehicle

Move laterally into the neighboring systems that usually share the same electrical neighborhood.

Starter Wiring Diagram β†’

Top A/C & Heater Diagram Paths

1.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Control Assembly, HVACGeneralOpen2.Electrical Diagrams > Air Conditioning & Heater WiringHeating and Air ConditioningOpen3.Electrical Diagrams > Heating and Air Conditioning > Air Conditioning & Heater WiringGeneralOpen4.Electrical Diagrams > Heating and Air Conditioning > Heater System CircuitGeneralOpen5.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > System DiagramGeneralOpen6.Electrical Diagrams > Heater System CircuitHeating and Air ConditioningOpen7.Vacuum and Vapor Hose DiagramsHeating and Air ConditioningOpen8.Cooling System β€” Electrical Diagrams > Heater OnlyEngine, Cooling and ExhaustOpen9.Cooling System β€” Electrical Diagrams > With Air ConditioningEngine, Cooling and ExhaustOpen10.Electrical Diagrams > Cooling System > Radiator Cooling Fan Motor > With Air ConditioningGeneralOpen11.Electrical Diagrams > Cooling System > Radiator Cooling Fan Motor > Without Air ConditioningGeneralOpen12.Electrical Diagrams > Cooling System > Radiator Cooling Fan Motor Relay > With Air ConditioningGeneralOpen13.Electrical Diagrams > Cooling System > Radiator Cooling Fan Motor Relay > Without Air ConditioningGeneralOpen14.Electrical Diagrams > Cooling System > System Diagram > Heater OnlyGeneralOpen15.Electrical Diagrams > Cooling System > System Diagram > With Air ConditioningGeneralOpen16.Electrical Diagrams > Instrument Panel, Gauges and Warning Indicators > Tachometer > Part 1 of 2GeneralOpen17.Electrical Diagrams > Instrument Panel, Gauges and Warning Indicators > Tachometer > Part 2 of 2GeneralOpen18.Emission Control Systems β€” Vacuum and Vapor Hose DiagramsPowertrain ManagementOpen19.Tachometer β€” Diagram Information and Instructions > How to Find System & Component DiagramsInstrument Panel, Gauges and Warning IndicatorsOpen20.Tachometer β€” Diagram Information and Instructions > How to Read Wiring Diagrams > Connectors, Grounds and SplicesInstrument Panel, Gauges and Warning IndicatorsOpen21.Tachometer β€” Diagram Information and Instructions > How to Read Wiring Diagrams > Wire Color CodesInstrument Panel, Gauges and Warning IndicatorsOpen22.Tachometer β€” Diagram Information and Instructions > How to Use Complete Body and Chassis DiagramsInstrument Panel, Gauges and Warning IndicatorsOpen23.Tachometer β€” Electrical Diagrams > Part 1 of 2Instrument Panel, Gauges and Warning IndicatorsOpen24.Tachometer β€” Electrical Diagrams > Part 2 of 2Instrument Panel, Gauges and Warning IndicatorsOpen25.Vacuum and Vapor Hose Diagrams > Emission Control SystemsGeneralOpen26.Diagram Information and Instructions > How to Find System & Component DiagramsHeating and Air ConditioningOpen27.Diagram Information and Instructions > How to Read Wiring Diagrams > Connectors, Grounds and SplicesHeating and Air ConditioningOpen28.Diagram Information and Instructions > How to Read Wiring Diagrams > Wire Color CodesHeating and Air ConditioningOpen29.Diagram Information and Instructions > How to Use Complete Body and Chassis DiagramsHeating and Air ConditioningOpen