There are a lot of sources and to our surprise, some of them even contain mistakes in the connection of the instrument cluster
To begin with there were 2 motherboard revisions, pinout on both is identical.
One is “with rabbit” one without.
The one with rabbit is a bit more stable and modern(personal opinion)
The connectors divide to S and W blocks, and to Left and Right sections. So- SL, SR, WL, WR
Or – in original documentation WK,WL, SK, SL.
W Connector – L Side (WL)
| Pin | Function | Description |
| WL7 | Speedometer input | Speedometer input from the sensor. |
| WL6 | MFA reset | Resets the Multi-Function Display (MFA) trip computer values. |
| WL5 | Clock – minute setting | Minute adjustment input for the dashboard clock, 12V level. |
| WL4 | Terminal 31 (Ground) | Chassis ground connection. |
| WL3 | Handbrake warning lamp | Activates parking brake warning indicator. |
| WL2 | Left turn signal indicator | Controls left turn signal lamp in instrument cluster. |
| WL1 | Rear window heater indicator | Indicates rear defroster operation. |
W Connector – K Side (WK)
| Pin | Function | Description |
| WK7 | KL1 RPM signal | Signal from the coil distributor unit |
| WK6 | Clock – hour setting | Hour adjustment input for the dashboard clock, 12V level. |
| WK5 | MFA mode | Switch input for changing MFA display modes. |
| WK4 | Terminal 61 | Charging system signal from alternator (battery warning lamp). Generator excitation. |
| WK3 | Right turn signal indicator | Controls right turn signal lamp in instrument cluster. |
| WK2 | High beam indicator | Controls high beam warning lamp. |
| WK1 | Rear fog light indicator | Indicates rear fog lights are switched on. |
S Connector – L Side (SL)
| Pin | Function | Description |
| SL9 | Terminal 58 | Instrument illumination supply from light switch. |
| SL8 | MFA Block switch | Input from the MFA block selection switch(column switch) |
| SL7 | Terminal 15 | Ignition-switched +12 V supply. |
| SL6 | Terminal 58b | Dashboard illumination dimmer input. |
| SL5 | Oil pressure switch (1.8 bar) | High-pressure oil switch input. |
| SL4 | N/C. Not going anywhere on PCB (non-rabbit) | Unknown |
| SL3 | N/C. Not going anywhere on PCB (non-rabbit) | Unknown |
| SL2 | Oil temperature sender | Sensor input for oil temperature gauge/MFA. |
| SL1 | Fuel level sender | Fuel tank level sensor input. |
S Connector – K Side (SK)
| Pin | Function | Description |
| SK9 | Terminal 58 | Lights indicator |
| SK8 | Coolant level sensor | Low level of coolant signal |
| SK7 | Unknown +12V signal input (some sources: Oil pressure sender output) | Unknown. Some sources: Variable signal from oil pressure sender. |
| SK6 | Not connected/unknown. Not going anywhere on PCB (non-rabbit version) | |
| SK5 | Terminal 31 (Ground) for MFA | MFA ground connection. Mandatory to avoid malfunction. |
| SK4 | Terminal 30, permanent power | Permanent battery +12 V supply. |
| SK3 | Oil pressure switch (0.3 bar) | Low-pressure oil warning switch input. |
| SK2 | Coolant temperature sender | Engine coolant temperature sensor input. |
| SK1 | Outside temperature sender | Ambient temperature sensor input used by MFA. |
Connectors are not easy to source, however you can purchase the 3d print model here:
Disclaimer
This pinout information has been compiled from publicly available sources and is provided for reference purposes only. Although every effort has been made to preserve the accuracy of the original information, errors, omissions, or variations between vehicle models and instrument cluster versions may exist. Pin assignments and functions can differ depending on model year, market, engine type, and cluster variant.
Always verify wiring and signal functions against official Volkswagen service documentation and the specific vehicle wiring diagrams before performing any installation, testing, or modifications. The author assumes no responsibility for any damage, injury, data loss, or malfunction resulting from the use of this information. Use this information at your own risk.
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