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Universal Patchcord Color Scheme
Standard wire colors for rusEFI universal patch cords, so that any patchcord can be identified without tracing it back to a connector pin.
Sections are presented in the suggested wiring order
| Signal | Color | Swatch |
|---|---|---|
| +12V ignition key (KL15) | red | 🔴 |
| Power ground | black | ⚫ |
| Main relay control (low-side) | grey | 🩶 |
| +12V from main relay | red | 🔴 |
| Sensor +5V feed | red or orange | 🔴 or 🟠 |
| Sensor ground (GNDA) | black | ⚫ |
| Signal | Color | Swatch |
|---|---|---|
| TPS 1 | green | 🟢 |
| TPS 2 | blue | 🔵 |
| PPS 1 | white | ⚪ |
| PPS 2 | orange/brown | 🟠🟤 |
| DC motor positive | blue | 🔵 |
| DC motor negative | white | ⚪ |
| Signal | Color | Swatch |
|---|---|---|
| CAN high | green | 🟢 |
| CAN low | blue | 🔵 |
| Signal | Color | Swatch |
|---|---|---|
| MAP | orange | 🟠 |
| CLT | grey | 🩶 |
| IAT | blue | 🔵 |
Bosch LSU 4.9 wiring, matching the sensor's factory lead colors:
| Signal | LSU 4.9 pin | Color | Swatch |
|---|---|---|---|
| Ip | 1 | red | 🔴 |
| Vs/Ip (Vm) | 2 | yellow | 🟡 |
| Heater negative | 3 | white | ⚪ |
| Heater positive | 4 | grey | 🩶 |
| CalR | 5 | green | 🟢 |
| Vs (Un) | 6 | black | ⚫ |
Injector, coil and similar numbered channels:
| Channel | Color | Swatch |
|---|---|---|
| 1 | green | 🟢 |
| 2 | white | ⚪ |
| 3 | blue | 🔵 |
| 4 | orange/brown | 🟠🟤 |
| 5 | brown | 🟤 |
| 6 | yellow | 🟡 |
Wire colors are defined per pin in the board connector .yaml files in the firmware
repository, and the interactive pinouts are generated from those same files:
| Board | Connector .yaml files |
Interactive pinout |
|---|---|---|
| uaEFI | connectors | https://rusefi.com/docs/pinouts/hellen/uaefi/ |
| super-uaEFI | connectors | https://rusefi.com/docs/pinouts/super-uaefi/ |
| Huge (formerly 8chan / AlphaX Platinum) | connectors | https://rusefi.com/docs/pinouts/hellen/alphax-platinum/ |
See also OEM harness connectors for connector part numbers.
Both side of patchcord use same type of plugs (usually superseal)? Use paint marker on VEHICLE side of the patchcord.
We love https://github.com/chuckwagoncomputing/interactive-pinout which is a great tool to visualize the pinouts of the boards.
Inputs: yaml and images, output: html
