Relays / Fuses

Fanfare Horn / Rear Window Heating Relay. 

The Genuine Porsche Fanfare Horn / Rear Window Heating Relay is an electrical switching component used in selected classic Porsche models to control a higher-current electrical circuit from a lower-current control signal.

Fits:

• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93
• Porsche 964 (911) RS 3.6L 1991-93
• Porsche 964 (911) RS 3.8L 1991-93
• Porsche 964 (911) TURBO 3.3L 1991-93
• Porsche 964 (911) TURBO 3.6L 1991-93
• Porsche 968 3.0L 1992-94
• Porsche 968 Sport 3.0L 1994-95
• Porsche 968 CS 3.0L 1993-95
• Porsche 968 Turbo S 3.0L 1993-94  

Diagram Ref No 7

Depending on the model and relay position, 92861520301 is used for either the fanfare/horn circuit or the heated rear window / rear defroster circuit. Porsche parts cataloguing identifies the relay as the rear window heating relay on Porsche 928, 944 and 968 applications, while Porsche 964 electrical diagrams also list the same part number for the fanfare/horn relay position.

The relay allows the electrical system to supply the current required by the horn or heated rear window without routing the full operating current through the dashboard switch.

What This Product Does:

• Electrically switches a higher-current circuit using a lower-current control signal.
• Provides power to the relevant horn or rear-window-heating circuit.
• Helps protect switches and control wiring from carrying excessive electrical current.
• Allows reliable operation of the connected electrical component.
• Provides electrical isolation between the control circuit and load circuit.
• Replaces an original relay with burnt, worn or intermittent contacts.
• Helps restore factory electrical operation in classic Porsche models.

When used for rear window heating, the relay supplies electrical power to the heated rear glass when the system is activated. Porsche cataloguing specifically identifies 92861520301 as the rear-window-heating/defroster relay on several applications.

When used as the fanfare relay, the relay switches power to the horn circuit when the horn control is operated. The Porsche 964 central electrical diagram lists 92861520301 at relay position R23 as the fanfare relay.

Symptoms Of Wear Or Failure:
Because the same relay can perform different functions depending on the vehicle, symptoms vary according to where it is fitted.

Possible symptoms include:

• Horn failing to operate.
• Horn working only intermittently.
• Delayed horn operation.
• Horn operating only after repeated use of the switch.
• Rear window heater failing to operate.
• Rear window taking much longer than normal to clear.
• Heated rear window working intermittently.
• Rear window heating cutting in and out unexpectedly.
• Relay clicking without the connected circuit operating.
• No audible relay click when the relevant switch is operated.
• Electrical function returning temporarily after the relay is moved or tapped.
• Burnt or discoloured relay terminals.
• Corrosion on electrical contacts.
• Signs of overheating around the relay or socket.
• Intermittent operation that worsens as the relay heats up.

A failed relay is not the only possible cause of these symptoms. Fuses, wiring, switches, earth connections, horn units and rear window heating elements should also be checked during diagnosis.

Why Replacement Matters:
Electrical relays contain internal contacts that open and close every time the circuit is operated.

Over years of service, these contacts can become:

• Burnt.
• Pitted.
• Oxidised.
• Contaminated.
• Mechanically worn.

Age and repeated heating cycles can also weaken the internal coil or switching mechanism.

Once the relay becomes unreliable, electrical power may no longer reach the connected component consistently.

Replacing a defective relay helps restore:

• Reliable horn operation.
• Correct rear window heating where applicable.
• Consistent electrical switching.
• Proper current delivery.
• Reliable operation of the associated circuit.
• Factory-style electrical functionality.

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92861520301

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Flasher relay.



Fits:
Porsche 911 1985-89
Porsche 924 1976-88
Porsche 928 1978-95
Porsche 944 1982-91
Porsche 968 1992-95
Porsche 964 1989-94
Porsche 993 1994-97

* Please check and match the part number of your relay in your car before ordering.

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1H0953227

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Flasher relay.


Hella ref no: 4DB 003 750-711

Fits:
Porsche 911 1985-89
Porsche 924 1976-88
Porsche 928 1978-95
Porsche 944 1982-91
Porsche 968 1992-95
Porsche 964 1989-94
Porsche 993 1994-97

* Please check and match the part number of your relay in your car before ordering.

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1H0953227

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Flasher relay.



Fits:
Porsche 911 1985-89
Porsche 924 1976-88
Porsche 928 1978-95
Porsche 944 1982-91
Porsche 968 1992-95
Porsche 964 1989-94
Porsche 993 1994-97

* Please check and match the part number of your relay in your car before ordering.

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PCG953227

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Flasher relay for cars with trailer coupling (M208).



Fits:
Porsche 928 1978-95
Porsche 944 1985-91
Porsche 968 1992-95

* Please check and match the part number of your relay in your car before ordering.

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92861513100

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Flasher relay for cars with trailer coupling (M208).



Fits:
Porsche 928 1978-95
Porsche 944 1985-91
Porsche 968 1992-95

* Please check and match the part number of your relay in your car before ordering.

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92861513100

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Front wiper relay.

Fits:
Porsche 928
Porsche 944
Porsche 968
Porsche 964
Porsche 993

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99361510101

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Fuel pump relay / DME relay. Porsche 924s / 944 / 964 / 968 / 993



Fits:
Porsche 924s 1986-88
Porsche 944 1982-91
Porsche 964 1989-94
Porsche 968 1992-95
Porsche 993 1994-97

* Please check and match the part number of your relay in your car before ordering.

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99361522702

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Fuel pump relay / DME relay. Porsche 924s / 944 / 964 / 968 / 993



Fits:
Porsche 924s 1986-88
Porsche 944 1982-91
Porsche 964 1989-94
Porsche 968 1992-95
Porsche 993 1994-97

* Please check and match the part number of your relay in your car before ordering.

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99361522702

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Fuel pump relay / DME relay. Porsche 924s / 944 / 964 / 968 / 993

Fits:
Porsche 924s 1986-88
Porsche 944 1982-91
Porsche 964 1989-94
Porsche 968 1992-95
Porsche 993 1994-97

* Please check and match the part number of your relay in your car before ordering.

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99361522702

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Fuse box and relay carrier.



Fits:
Porsche 944 1985-91
Porsche 968 1992-95

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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Fits:
Porsche 911 - 1970to 1989
Porsche 964 - 1990 to 1994
Porsche 968 - 1992 to 1995
Porsche 914 - 1970 to 1976
Porsche 924S - 1986 to 1988
Porsche 944  - 1982 to 1991

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90161233400

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Headlight Washer System Relay.



Fits:
Porsche 911 1974-89
Porsche 911 (930) Turbo 1975-89
Porsche 964 1989-94
Porsche 914 1974-76
Porsche 924 1979-85
Porsche 924 S 1986-88
Porsche 928 1978-95
Porsche 944 1982-91
Porsche 968 1992-95

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92861811100

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Intermittent/pulse wiper relay for the front windscreen wipers on many 1980s–1990s Porsche models. Controls the wiper intermittent (delay) function and the pulse/park behaviour — direct OEM fit for 928, 944, 968, 964  applications. Part number: 993.615.101.01 / 99361510101.

Fits:
Porsche 964 (911) C2 1989-93

Porsche 964 (911) C4 1989-93
Porsche 964 (911) RS 3.6L 1991-93
Porsche 964 (911) RS 3.8L 1991-93
Porsche 964 (911) TURBO 3.3L 1991-93
 Porsche 964 (911) TURBO 3.6L 1991-93
Porsche 944 2.5L 8V 1982-87
Porsche 944 2.7L 8V 1988-89
Porsche 944S 2.5L 16V 1987-88
Porsche 944S2 3.0L 16V 1989-91
Porsche 944 Turbo 2.5L 8V 1985-88
Porsche 944 Turbo 2.5L 8V 1989-91
Porsche 944 Turbo S 2.5L 8V 1988
Porsche 968 3.0L 1992-94
Porsche 968 Sport 3.0L 1994-95
Porsche 968 CS 3.0L 1993-95
Porsche 968 Turbo S 3.0L 1993-94
Porsche 928 4.5L 1978-82
Porsche 928S 4.7L 1981-83
Porsche 928S2 4.7L 1984-86
Porsche 928S4 5.0L 1987-92
Porsche 928GT 5.0L 1989-91
Porsche 928GTS 5.4L 1992-95

Why replace this relay?

Loss of intermittent function — the most common symptom: intermittent (delay) wipe stops working while continuous speeds still operate. Many owners find the delay knob produces one sweep only or nothing.

Wipers stuck on / won’t stop — relay contacts or internal timer failure can leave wipers running or behaving unpredictably. Forum reports show both “wipers won’t turn off” and “wipers run continuously” symptoms tied to the relay or associated wiring.

Intermittent clicking / no response — relay may stop clicking or click but not switch the motor circuit due to worn contacts or internal failure. Swapping relay is a common test. 

Common issues & fault causes

Worn internal contacts / timer fault — relay internals degrade with age and use, causing loss of the pulse/interval function.

Corroded connector or fuse/relay carrier contacts — poor connection at the fuse/relay panel can mimic relay failure; cleaning contact points often fixes intermittent faults.

Related component faults — sometimes the wiper stalk/switch or the wiper motor itself causes similar symptoms; common troubleshooting is to test/swap the relay first, then check the stalk and motor.

Shorts / blown fuses — seized motor or wiring short can blow fuses or overload circuits; a failing relay can also cause abnormal current behaviour. 

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99361510101

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Multi Plug Socket 6-Pole

OE Match 6-pole multi plug socket for a wide range of classic Porsche models. Supplied as two pieces comprising the male and female connector housings, it provides a replacement for an original connector that has become damaged, brittle or unsuitable for continued use.

Fits:

• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)
• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93
• Porsche 964 (911) RS 3.6L 1991-93
• Porsche 964 (911) RS 3.8L 1991-93
• Porsche 964 (911) TURBO 3.3L 1991-93
• Porsche 964 (911) TURBO 3.6L 1991-93
• Porsche 924S 2.5L 1986-87
• Porsche 924S 2.5L 1988
• Porsche 944 2.5L 8V 1982-87
• Porsche 944 2.7L 8V 1988-89
• Porsche 944S 2.5L 16V 1987-88
• Porsche 944S2 3.0L 16V 1989-91
• Porsche 944 Turbo 2.5L 8V 1985-88
• Porsche 944 Turbo 2.5L 8V 1989-91
• Porsche 944 Turbo S 2.5L 8V 1988
• Porsche 968 3.0L 1992-94
• Porsche 968 Sport 3.0L 1994-95
• Porsche 968 CS 3.0L 1993-95
• Porsche 968 Turbo S 3.0L 1993-94
• Porsche 914 (1970-1976)

Type: 6-pole electrical connector
Contents: Male and female connectors

What Does the Multi Plug Socket Do?

The 6-pole multi plug provides a detachable electrical connection between sections of the vehicle wiring.

Its six-pole design allows multiple electrical circuits to pass through a single connector while keeping the wiring organised and providing a connection that can be separated when servicing electrical components or the wiring loom.

Why Do Electrical Connectors Fail?

Electrical connectors on classic Porsche models can deteriorate after decades of heat, vibration and previous maintenance.

Common problems include:

• Brittle or cracked connector housings
• Broken retaining sections
• Corroded electrical terminals
• Loose connections
• Heat damage
• Previous wiring repairs
• Damaged or incorrectly fitted terminals

A deteriorated connector can cause intermittent electrical faults even when the surrounding wiring appears serviceable.

When Should It Be Replaced?

Replace the multi plug socket if the housing is cracked, melted, badly worn or no longer holds the electrical connections securely.

If diagnosing an intermittent electrical problem, also inspect the terminals and surrounding wiring for corrosion, heat damage or broken conductors before replacing the connector housing.

Checks Before Installation

Before fitting, check:

• Existing connector matches the 6-pole configuration
• Wiring terminals are clean and undamaged
• Wires are securely attached to their terminals
• No corrosion is present
• Connector orientation is correct
• Wiring is installed in the correct terminal positions

Record the original wire positions before dismantling the existing connector to avoid incorrect reconnection.

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Fits:
Porsche 924S - 1986 - 1988 (electric sunroof)
Porsche 944 - 1982 to 1991 (electric sunroof)
Porsche 968 - 1992 to 1995 (electric sunroof and cabriolet roof)
Porsche 993 - 1996 to 1997 ("CDN" location R32)
Porsche 997.1 - 2005 to 2008 (Engine bay fan, location S8)
Porsche 991.1 / 991.2 - 2012 to 2019 (emergency operation cover, location K3 and rear spoiler, location K4)
Porsche 981 Boxster / Cayman - 2012 to 2016 (emergency operation cover, location K3) 
Porsche 718 Boxster / Cayman - 2017 Onwards (emergency operation cover, location K3) 
Porsche 9J1 Taycan - 2020 to 2024



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