As I continue working on this site, I'll draw more diagrams and create more charts and calculators as needed and list them on this page. Additional information can be found in our Vehicle Wiring Database, Members' Downloads Section, and our forum, the12volt's install bay. Please do not email requests for information.

...the12volt

Disclaimer: *All information on this site is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

the12volt's Application Guide - Includes dozens of application guides in one! Dash Kits, Harnesses, Antennas, Adapters, Immobilizer Bypasses and Alarm/Door Lock Interfaces, CAN Bus, Data, Passlock I & II, PK3, PK3+, PATS, VATS, Auxilary and i-Pod Interfaces, Mobile Video, Navigation, Bluetooth, Steering Wheel Interfaces, Cruise Controls, and more...

Browse by category:
• Basics
• Calculators
• Car Stereo, Power and Speaker Wiring
• Cruise Controls
• Door Locks & Window Modules
• Light Flash & Illuminated Entry
• Metra Application Guides
• Passive Crossovers
• Relay Diagrams - Quick Reference
• Requested Diagrams: Alarm/Remote Start Info
• Starter Interrupts
• Subwoofer Enclosures and Wiring
• the12volt's Application Guide
  Dozens of application guides in one!
• Vehicle Wiring Database
  Alarm, Stereo, & Cruise Control Info
   (only available to members of the12volt's install bay)
• Forum Stickys
• Miscellaneous

Fluke 177 Digital Multimeter, 1000V, Backlight, Min/Max/Avg

• 6000 count display delivers improved resolution
• True-RMS AC voltage and current measurement
• Min/Max/Average recording feature
• Frequency, capacitance and resistance capabilities
• Lifetime Warranty

Basic Electronics
• Diodes, Isolating Door Triggers and Sensors, Diodes Across the Coil of Relays • Ohm's Law, Ohm's Law Pie Chart • Ohm's Law Calculators • Relays, SPDT Relays, SPST Relays, Latching Relays • Resistors, Resistor Color Codes • Resistor Color Code Calculator

Calculators

• Capacitor & Coil Calculator for 1^st, 2^nd, and 3^rd Order Passive Crossovers
• Fraction to Decimal Calculator
• Narrow Band Pass Calculator for 1^st, 2^nd, and 3^rd Order Passive Crossovers
• Ohm's Law - Current Calculators
• Ohm's Law - Power Calculators
• Ohm's Law - Resistance Calculators
• Ohm's Law - Voltage Calculators
• Parallel Calculator
• Port Length Calculator (round)
• Port Length Calculator (slot)
• Resistor Color Code Calculator
• Series Calculator
• Subwoofer Wiring Wizard for 1 ohm DVC, 2 ohm DVC, 4 ohm DVC, 4 ohm SVC, 6 ohm DVC, and 8 ohm SVC Speakers
• Volume Calculator - Rectangular/Square Enclosures
• Volume Calculator - Tube/Cylinder Enclosures
• Volume Calculator - Wedge Enclosures 1
• Volume Calculator - Wedge Enclosures 2
• Zobel Calculator for Passive Crossovers

Car Stereo, Power and Speaker Wiring

• American Wire Gauge Sizes
• Connecting Additional Devices to the Remote Turn On Wire Relay Diagram
• Power and Ground Cable Sizes
• Radio On Until Door Opened Relay Diagram
• Stereo to Bridged Mono Switched Outputs Relay Diagram
• Subwoofer Wiring Wizard for 1 ohm DVC, 2 ohm DVC, 4 ohm DVC, 4 ohm SVC, 6 ohm DVC, and 8 ohm SVC Speakers
• Switching from Series to Parallel and Back Relay Diagram
• Switching from Stereo to Bridged Mono & Series to Parallel and Back Relay Diagram
• Typical Head Unit Wire Harness

Cruise Controls
• Micro Cruise Switch Settings • Rostra's VSS & Tach Info

Door Locks & Window Modules

• 3 Wire Positive Door Locks Relay Diagram
• 4 Wire Reversal Door Locks Relay Diagram
• 5 Wire Alternating 12 Volts Positive Door Locks Relay Diagram
• Actuators / Reverse Polarity Relay Diagram
• Add Auto Lock without an Alarm or Keyless Entry System Relay Diagram
• Add Auto Unlock without an Alarm or Keyless Entry System Relay Diagram
• Dodge Caravan Single Wire Lock/Unlock with Resistors Diagram
• Double Ground Pulse Relay Diagram
• Ford Probe Single Wire Lock/Unlock with Resistor Relay Diagram
• Nissan 1991 - 1995 option 1 Single Wire Lock/Unlock Relay Diagram
• Nissan 1991 - 1995 option 2 Single Wire Lock/Unlock Relay Diagram
• Nissan Maxima 1995 - 1997 Door Locks Relay Diagram
• Single Pulse to Lock and Unlock Relay Diagram
• Toyota with Child Safety Door Lock System Relay Diagram
• Vacuum Type Door Locks Relay Diagram
• Window Module / 2 Up or Down

Light Flash & Illuminated Entry
• Adding Light Flash with Siren Output Relay Diagram • Basic Light Flash Relay Diagram • Illuminated Entry for Vehicles with Negative Door Triggers Relay Diagram • Illuminated Entry for Vehicles with Positive Door Triggers Relay Diagram • Two Wire Light Flash Relay Diagram

Metra Application Guides
• 2001 Metra Application Guide • 2002 Metra Application Guide • 2003 Metra Application Guide • 2004 Metra Application Guide • 2005 Metra Application Guide • 2006 Metra Application Guide • 2007 Metra Application Guide • The Application Guide - Dozens of application guides one!

Passive Crossovers

• 2 Ohm Charts
• 4 Ohm Charts
• 8 Ohm Charts
• Capacitor & Coil Calculator
• First Order Low Pass
• First Order High Pass
• First Order Band Pass
• First Order Narrow Band Pass
• Narrow Band Pass Calculator
• Second Order Low Pass
• Second Order High Pass
• Second Order Band Pass
• Second Order Narrow Band Pass
• Third Order Low Pass
• Third Order High Pass
• Third Order Band Pass
• Third Order Narrow Band Pass
• Zobel
• Zobel Calculator

Starter Interrupts
• Normally Closed Starter Kill Relay Diagram • Normally Open Starter Kill Relay Diagram • Passive Starter Kill Relay Diagrams 1, 2, & 3

Subwoofer Enclosures and Wiring

Forum Stickys

Car Audio:

• Favorite car audio brand, updated

• What is a proper sub box?

• How to wire through a door molex.

• How to Set Your Gains

• Running one vc on a dvc sub

• How to choose an amplifier.

• Ground Q/A sticky

• Guide: Using WinISD

• Comprehensive front stage setup

• Too Little Power

• How to choose a car CD receiver.

• How to upgrade the Big Three

• Fuse size?

• Ohms, using resistors with woofers?

• Advanced front speaker systems how-to

• How to identify stereo wiring.

• What is a proper ground?

Car Security & Convenience:

• Rookies and all seeking advice.

• Viper 5902 vs 7901?

• DEI 528t, siren delay

• Key immobilizers and remote starting

• Tach wire general comments

• What�s the reason to diode isolate?

• How to test for wait to start wire.

Fiberglass, Fabrication & Interiors:

• Tinting Clear Plastic

• How to Make a Fiberglass Enclosure

• Flushing a remote, fun little project

• Fiberglass, Roush Mustang

• Fiberglass shopping list

• How to make circular rings

• Sticky Packing peanut volume measurement

Lights, Neon, LEDs, HIDs:

• Fog Light buzzer

• LEDs in a row

• LED tail light conversion

• LED in my ashtray, resistor size?

• Flashing LED

Mobile Video and Navigation:

• Video In Motion Law

• Headrest how-to, 06 Chrysler 300c

• Headrest Monitor How To, 91 Accord

Music, Favorite Songs, Movies, Videos, Test CD's:

• Good songs for bass?

Relays:

• Radio on until door open + trigger

• Add auto lock,unlock to Excursion,F250

• Regarding All Relay Questions

Vehicle Information Requests:

• Vehicle Wiring Information up to 2010

Miscellaneous

(* links to our old forum will open in a new window)

• American Wire Gauge Sizes
• Basic Remote Start Relay Diagram
• Converting Polarity (Negative to Positive, Postive to Negative) Relay Diagrams
• Constant to Momentary Output Relay Diagram
• Dual Stage Sensor to Standard Alarm
• Isolating 2 Triggers with Diodes
• Latched On/Off Output Using a Single Momentary Pulse Relay Diagram
• Momentary to Constant Output Relay Diagram
• One Channel to Multiple Outputs Relay Diagram
• Pulsed to Steady On Output Relay Diagram
• Radio On Until Door Opened Relay Diagrams
• Waking Up BCM - 1996 Chevy Camaro*

Additional information has been posted in our forums.

To get the information not posted here, please post your request in our forums, the12volt's install bay. Please do not email your requests. We will not respond to any requests by email.

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Basics • Car Audio • Car Security • Cruise Controls • Diodes • Door Locks • Ohm's Law • Passive Crossovers • Relays • Resistors • Subwoofer Enclosures

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