> For the complete documentation index, see [llms.txt](https://manual.rush.sr/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.rush.sr/maintenance/electronics-and-wiring/main-harness.md). # Main Harness The interactive diagram below shows all active wiring in the Rush SR main harness (Gen2 drive-by-wire). Click any wire for details, or use the circuit toggles to isolate individual systems. Click "Wire Reference Table" on the dash panel for a complete wire list. {% embed url="" %} ## Power Distribution Wire colors use the Suzuki convention: first letter is the base color, after the slash is the stripe. For example, R/W means a red wire with white stripes. The main 30A fuse supplies power via a red (R) wire to the dash panel On/Off switch. From there, power is distributed through two main circuits: * **W/Y (Ignition circuit)** — powers the ECU and feeds the Run switch. The Run switch outputs W/R wires to ignition coils, starter button, and fuel switch. * **W/G (Signal circuit)** — powers the shift harness, AiM data logger, brake light relay, and other auxiliary systems. The fuel switch controls the fuel pump relay. When energized, the relay outputs R/W power to the fuel pump and all four injectors. The ECU controls each injector and coil individually via ground-side switching. ## Reference Diagrams * [Shift Harness Wiring Diagram](/maintenance/electronics-and-wiring/shift-harness.md) * [GCU Wiring Diagram](/maintenance/electronics-and-wiring/shift-harness.md#wiring-diagram) {% file src="/files/FLrLQfHZ3CxsBAZqZchk" %} Original annotated Suzuki schematic showing removed OEM components (crossed out) and Rush SR modifications. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://manual.rush.sr/maintenance/electronics-and-wiring/main-harness.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.