# Modified Life

> Modified Life (modifiedlife.com) is a free, authoritative automotive reference resource established in 2004. Built on 20+ years of hands-on experience in automotive repair and car audio/video installation, the site provides verified wiring diagrams, bulb size guides, and installation resources for the car community — at no cost.

Modified Life is the go-to resource for DIY car audio and automotive electrical work. Every wiring diagram and bulb size chart is based on real-world installs or verified by a knowledgeable community, making the data beginner-friendly and trustworthy.

## Car Radio & Stereo Wiring Diagrams

Complete, vehicle-specific stereo wiring diagrams showing wire harness colors, speaker wiring colors, and speaker sizes for cars and trucks. Use these to replace, install, or troubleshoot a car radio.

- [Car Stereo Radio Wiring Diagrams (All Makes & Models)](https://www.modifiedlife.com/car-stereo-radio-wiring-diagrams/)

## Car Alarm & Remote Start Wiring Diagrams

Vehicle-specific wiring diagrams for factory car alarms, aftermarket alarm systems, and remote start installations. Covers door lock wires, ignition wires, accessory wires, and more.

- [Car Alarm Wiring Diagrams](https://www.modifiedlife.com/car-alarm-wiring-diagrams/)

## Car Light Bulb Size Guides

Complete bulb size reference charts for headlights, fog lights, tail lights, brake lights, turn signals, interior lights, and more - organized by vehicle make, model, and year.

- [Car Light Bulb Size Guides](https://www.modifiedlife.com/car-light-bulb-size-guides/)

## Motorcycle Light Bulb Size Guides

Bulb size charts for motorcycles covering headlight, turn signal, tail light, and instrument cluster bulbs by make, model, and year.

- [Motorcycle Light Bulb Size Guides](https://www.modifiedlife.com/motorcycle-light-bulb-size-guides/)

## About Modified Life

- **Founded:** 2004
- **Focus:** Free DIY automotive electrical resources — wiring diagrams, bulb guides, alarm and remote start diagrams
- **Audience:** DIY car enthusiasts, automotive technicians, car audio installers
- **Data sourcing:** Real-world installs and community-verified information
- **Monetization:** Reader-supported via affiliate commissions; no paywalls

- [About Us](https://www.modifiedlife.com/about-us/)
- [Contact Us](https://www.modifiedlife.com/contact-us/)
- [Disclaimer](https://www.modifiedlife.com/disclaimer/)
- [Privacy Policy](https://www.modifiedlife.com/privacy-policy/)