Answer
Oct 02, 2025 - 03:37 AM
For a complete wiring diagram of your 2012 Toyota Tundra, including the running lights, you’ll want this 👉🏻 2012 Toyota Tundra Service & Repair Manual.
That manual has every factory diagram, including all the lighting circuits, grounds, and connector pinouts, so you can trace that hard-to-find ground properly.
It also comes loaded with everything else the factory published, like:
- General service info and scheduled maintenance
- Full wiring diagrams and electrical troubleshooting
- Lighting system diagnostics, replacement, and repair
- Brake, driveline, steering, and suspension procedures
- Engine servicing, fuel and emissions
- Transmission and shift lock system repair details
- Heating, A/C, and restraint systems
So yeah — if you’re chasing that ground for the running lights, this manual has the complete diagrams to show you exactly where it is.
