Index of the12volt.com's Calculators, Charts, Diagrams, and Resources

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, Relay Diagrams - Quick Reference, Members' Downloads Section, and our forum, the12volt's install bay. Please do not email requests for information.

Basic Electronics

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

Calculators

Calculators • Capacitor & Coil Calculator • Fraction to Decimal Calculator • Narrow Band Pass Calculator • 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 • 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

Car Stereo, Power and Speaker Wiring • American Wire Gauge Sizes • Connect Additional Devices to 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 • Switch Series to Parallel and Back Relay Diagram • Switch Stereo to Bridged Mono & Series to Parallel and Back Relay Diagram • Typical Head Unit Wire Harness • Also see: Relay Diagrams - Quick Reference

Cruise Controls

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

Door Locks & Window Modules

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 • Also see: Relay Diagrams - Quick Reference

Light Flash & Illuminated Entry

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 • Also see: Relay Diagrams - Quick Reference

Passive Crossovers

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

Starter Interrupts • Normally Closed Starter Kill Relay Diagram • Normally Open Starter Kill Relay Diagram • Passive Starter Kill Relay Diagrams 1, 2, & 3 • Also see: Relay Diagrams - Quick Reference

Subwoofer Enclosures and Wiring

Subwoofer Enclosures and Wiring • Second Order / Infinite Baffle / Free Air    • Typical Rear Deck Installation/Infinite Baffle/Free    • Back Seat Installation    • Small Deck Installation • Second Order/Acoustic Suspension/Sealed Enclosures    • Sealed    • Isobaric - Sealed    • Isobaric - Sealed (Compound Loading)    • Isobaric - Sealed (Back to Back)    • Isobaric - Sealed (Planar Loading) • Fourth Order / Bass Reflex & Bandpass Enclosures    • Fourth Order / Bass Reflex    • Isobaric - Bass Reflex    • Isobaric - Bass Reflex (Compound Loading)    • Bass Reflex - Passive Radiator    • Isobaric Bass Reflex - Passive Radiator    • Single Reflex - Band Pass    • Isobaric Single Reflex Bandpass    • Three Chamber Single Reflex Bandpass    • Isobaric Three Chamber Single Reflex Bandpass • Sixth Order Enclosures    • Quasi Sixth Order Series-Tuned Bandpass    • Isobaric Quasi Sixth Order Series-Tuned Bandpass    • Dual Reflex Bandpass    • Isobaric Dual Reflex Bandpass    • Three Chamber Dual Reflex Bandpass    • Isobaric Three Chamber Dual Reflex Bandpass • Eighth Order Enclosures    • Quasi Eighth Order Series-Tuned Dual Reflex Bandpass    • Isobaric Quasi Eighth Order Series-Tuned Dual Reflex Bandpass    • Eighth Order Triple Reflex Bandpass    • Isobaric Eighth Order Triple Reflex Bandpass • Parallel, Series, Port Length, & Volume Calculators • Subwoofer Wiring Wizard and Diagrams • Thiele - Small Parameters

Miscellaneous

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*

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Disclaimer: *All information on this site ( the12volt.com ) 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.