Subaru D | Additional Passthrough Pins Needed for More Support

[jacobwaller]

Based on my & other folks' findings, we can support more cars on the existing Subaru D Harness by only adding more passthrough pins.

• 2021 Outback (AU) - requires a passthrough on pin 6. Harness Modification for Subaru Outback JDM 2021-2024 #18
• 2026 Crosstrek - Existing D (Same for ICE / Hybrid)
• 2026 Impreza - Existing D
• 2026 Ascent - Existing D
• 2026 WRX - Existing D (Actually is missing 2 pins that are passthrough on normal D)
• 2026 Forester - requires passthrough on pin 3 and pin 15 for EYE local 1 CAN L and EYE local 1 CAN H respectively. I do not have a Forester to test on, but the existing D connecter is passthrough on EYE local 2 CAN L and EYE local 2 CAN H (Same for ICE / Hybrid)
• 2026 Outback - quite a few more wires. we will need passthrough on at least pin 3 ((K)_Rear advanced
  safety CAN L), pin 6 (LIN communication), and pin 15 ((K)_Rear advanced
  safety CAN H)

All-in, adding passthroughs on pins 3, 6, and 15 should be all that is needed

2026BRZEyesightSecurityGateway.pdf
2026BRZEyesight.pdf
2026AscentEyesight.pdf
2026OutbackEyesight.pdf
2025CrosstrekImprezaICEEyesight.pdf
2026ForesterHybridEyesight.pdf
2026CrosstrekImprezaHybridEyesight.pdf
2026WRXEyesight.pdf
2026ForesterICEEyesight.pdf
2026CrosstrekImprezaICEEyesight.pdf

[TenoTenoTeno]

Hello. I drive a 2021 WRX Sports Wagon in Japan. I think we probably have the same harness, but I'd like to see pictures of a modified D harness.