> For the complete documentation index, see [llms.txt](https://help.matrack.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.matrack.io/eld/readme/categories/general-service-guides/eld-installation-guide.md). # ELD installation guide ## ELD Device Installation Guide ### Installation Steps #### 1. Locate Diagnostic Port The 9-pin cable connects to the diagnostic port, commonly found in one of these locations: * Under the dashboard * Underneath the steering wheel * Below the driver's seat * Near the driver's left kick panel #### 2. Connect Hardware * Attach the 9-pin CONNECTOR to the diagnostic port * Connect the ELD device to the other end of the cable * Power on the ELD device * Turn on the vehicle ignition #### 3. Software Setup * Ensure the ELD driver app is installed on your device * Log in to your account * Start the vehicle and [connect to the ELD](/eld/readme/categories/matrack-eld-driver-app-guides/how-to-install-and-connect-your-eld-device.md) to begin hours of service tracking {% hint style="warning" %} **Important Notes** * Verify all connections are secure * Ensure the ELD device powers on properly * Confirm app login before starting your journey {% endhint %} ### Pre-Trip Checklist ✓ 9 Pin Cable connected ✓ ELD device powered on ✓ Ignition turned on ✓ App installed and logged in ### Need Help? Contact technical support if you experience any issues during installation. --- # 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://help.matrack.io/eld/readme/categories/general-service-guides/eld-installation-guide.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.