1-Factory wiring guide for your vehicle
http://www.installdr.com/QuickWiring.html
2-Basic guide to car audio
http://www.faqs.org/faqs/car-audio/part1/
3-Comprehensive guide to all aspects of mobile electronics
http://www.clubknowledge.com/Car_Audio_FAQ/articles/
This site contains- (for search keyword porposes)
"Clipping", distortion and how they effect our systems
12 volts & Car Audio Glossary
A review on Class D amps and sub pairings
Alternators and Charging systems
Are You in Phase?
Bandpass boxes.
Basic Tweaking: Getting the bass right in your system
Car Audio at Home
Determine the RMS power rating of an amplifier
Doing it right the first time - wiring.
Door Panel Removal
Enclosure building safety tips
Enclosure formulas
Fiberglass in car audio
Fuse Theory
Grounding your system effectively:
HOW TO BUILD AN IDEAL CAR AUDIO SYSTEM (for beginners)
How to repair a damaged woofer (coil separated from spider)
Mistakes and Hints for the Beginner DIYer
Overview of enclosure designs.
Passive filtering for mids & tweets
Power Systems / SPL Basics
Receiver Buying tips
Sealed Versus Ported
Should i Buy this?
Speaker cone... repairs you can do it!
Subsonic filtering for Port Tune enclosures
Subwoofer & Amp Wiring Diagrams
Subwoofer Wiring Possibilities
Transmission Line Enclosures
Tuning a ported box
What gauge wire to use
What to consider when building a sealed box.
Where to buy!
Wiring Speakers
want to run an amp off of a factory head unit?