Learn to modify muscle car electrical circuits or install modern conveniences on performance cars confidently and quickly.;Introduction -- Chapter 1. Understanding electrical principles and simple circuits. High current/low voltage ; Ohm's Law ; The power formula ; Combinations ; Kirchhoff's Law ; Circuit basics ; Wire resistance chart ; Example: installing an electric fuel pump ; Hazards presented by on-board computers ; Disconnecting the battery-when? -- Chapter 2. The right tools for the job. Required tools ; The test light ; The digital multi-meter ; DMM basic functionality -- Chapter 3. The fundamentals of automotive wiring. Basic connections ; Crimp-style connections ; Fundamentals of crimping ; Soldering irons and guns how-to ; Insulating connections ; Temporary mechanical connectors ; Distribution-type connectors ; Connectors and plugs ; Basics for AWG wire 8 and larger -- Chapter 4. Ignition switches, wiring harnesses and controllers. The ignition switch ; The wiring harness ; Controllers: the basics -- Chapter 5. Power accessories and the charging system. Power door lock circuits ; Power window circuits ; The charging system -- Chapter 6. Wiring aftermarket equipment and upgrading components. Safety first ; Passing through a metal barrier ; Installing a tachometer ; The charging system-revisited ; Protecting your work -- Chapter 7. Troubleshooting. Understanding flowcharts ; Typical problems ; Circuit inoperable ; Circuit works, but blows fuses: scenario 1 ; Circuit works, but blows fuses : scenario 2 ; Wiring is burned up ; Battery is drained overnight ; Intermittent circuit operation -- Chapter 8. Advanced installations and interfaces ; Interfacing with power door lock and power window circuits ; Factory wiring diagrams ; Interfacing with power sunroof and convertible top circuits ; Upgrading headlights to higher power units ; Adding an auxiliary battery ; Adding an accessory fuse panel -- Chapter 9. Building a wiring harness. Harness basics ; Building a harness from scratch ; Harness construction project ; Resources.