Free Vehicle Wiring, Relay Diagrams, and Technical Information for Mobile Electronics Installers, Enthusiasts, and Do-It-Yourselfers since 1999
Welcome to the12volt.com!
This is an on going project to provide mobile electronics installers, enthusiasts, and do it yourselfers a free on line resource for *technical information as well as tips and tricks of the trade.
Log in to post your installation questions and wiring requests for alarm, remote start, keyless entry, stereo, cruise control, and other information, and to download diagrams, tech tips, and installation & owner's manuals from our Member Downloads section. Not a member? Join Now! It's free!
The next six links are to popular sections of our site that contain some of the most often requested information in our forums. Please visit these sections before posting your questions or requests.
Alarm/Remote Starter Installation Pictorials - Member submitted photos and descriptions of wire locations for alarm, remote keyless entry, and remote starter installations.
Member Downloads - Log in to download (and upload) diagrams, tech tips, installation manuals, owner's manuals, and more.
Relay Diagrams - Quick Reference - Dozens of the most popular relay diagrams created for our site and members all in one place. Many more can be found and requested in our forums.
Subwoofer Box Calculators - Easy to use calculators to determine volume for multiple shaped boxes, speaker impedance loads, round and square port sizes, and more.
Subwoofer Wiring Wizard - Easy to understand diagrams of one to four speakers with a variety of single and dual voice coils.
Vehicle Wiring - Our free vehicle wiring section includes car alarm wiring, remote start wiring, car stereo wiring, cruise control wiring, navigation wiring, and more for most vehicles available in the U.S. as early as 1967 and up.
Mobile Electronics Installer Resources
For any mobile electronics installer, these are the basics. If you're not familiar with these, we suggest you visit these sections first.
• Ohm's Law
• Ohm's Law Calculators
• Recommended Books & DVD's
• Recommended Wire Sizes
• Relay Diagrams
• Glossary of Terms
• Tools and Equipment
• Car Alarm Connections
• Car Alarm Modules
• Car Alarm Sensors & Triggers
• Door Locks
• Light Flash
• Illuminated Entry
• Starter Interrupts
• Alarm and Remote Start Manuals
• Alarm and Remote Start Pictorials
• Car Security & Convenience Forum
• Car Security & Convenience Hot Topics
• Car Audio Forum
• Mobile Video & Navigation Forum
• Glossary of Terms
• Ohm's Law
• Parallel & Series Calculators
• Passive Crossovers & Calculators
• Power and Ground Cable Sizes
• Subwoofer Enclosures
• Subwoofer Enclosure Calculators
• Subwoofer Wiring Wizard
• Thiele - Small Parameters
• Car Audio Hot Topics
• Car Audio Manuals
• Car Stereo Insurance
• Mechanical Connections
• Electrical Connections
• Micro Cruise® Servo
• Control Arms
• Additional Connections
• VSS and Tach Information
• Cruise Control Forum
• Cruise Control Manuals
• Application Guides
• Find Installers Near You
• Index of Calculators, Charts, Diagrams
• Manuals & Tech Tips
• Mobile Electronics Links
• Vehicle Wiring
If you have an installation question or would like to request any information, please join the12volt's Install Bay. Our members include many professional installers & knowledgeable enthusiasts that have been posting questions and answers in our forums since March 7, 2002. Joining the12volt's Install Bay is free and only takes a few minutes to become a member.
• Focal Beryllium BMW
• Ground Q/A sticky
• How to Set Your Gains
• How to Choose an Amplifier.
• How to Upgrade the Big Three
• How to Identify Stereo Wiring.
• How to Wire through a Door Molex.
• How to Make a Fiberglass Enclosure
• Running one VC on a DVC sub
• Too Little Power