This is the do-it-yourself book you've
heard about that’s designed to help
you diagnose and repair electrical
systems on your motorcycle with ease.
Save time and money and have the
satisfaction of fixing your bike right, the
first time. Designed to assist both
novice and expert motorcycle
technicians alike, “Motorcycle Electrical
Systems Troubleshooting and Repair”
unravels the mystery of, and difficulty
of understanding how, 12-volt
electrical systems operate. Whether
you are serious about diagnosing
motorcycle electrical problems and/or
performing repairs, or you simply want
to have a better understanding of the
inner workings of electrical systems on
your favorite mode of transportation,
so your next repair estimate won’t give
you the shock of your life, this book
has the answers to all of your biggest
questions about the mystery of
motorcycle electrical systems.
Written in easy-to-understand language, this book never reads like a typical textbook as it
teaches all the essentials about storage batteries, motorcycle charging systems, battery
chargers, ignition and electronic fuel injection systems and more. A broad range of
diagnostic tools and equipment are discussed, including digital multimeters, test lights, logic
probes and other electronic test equipment, to assist with identifying the best tool for the job
and how to use it.

Plus, wiring diagrams no longer have to represent ugly, indecipherable mazes of confusion.
With the help of this book, and chapters like “How to Read a Wiring Diagram,” which provides
easy, step-by-step instruction through the entire process, followed by challenging exercises
designed to test comprehension, weekend mechanics can master the technical art of
unraveling most wiring diagrams with the confidence of a seasoned electrical professional.

Filled with simple, clarifying full-color illustrations and photographs, this 158 page book
contains all the information necessary to successfully tackle that next motorcycle electrical
diagnostic and repair dilemma with ease. An informative, easy read with quick, at-a-glance
useability, this is the only book to comprehensively make the complex language and
operations of electrical systems on a motorcycle simple, entertaining and stress-free.

Find out for yourself how easy it is to competently navigate a topic, which up until now has
been a mystery to all but the most highly trained technicians, and why learning new skills has
never been more practical or enjoyable.
Chapter 1 – Ohms Law
The “Hot-Rod” version of Ohms law is explained in easy-to-understand language.
Colored diagrams illustrate how to apply electrical theory to the real-world of electrical
testing on your motorcycle.

Chapter 2 – Voltage Drop Testing
Even professional technicians struggle with the concept of voltage drop testing. This
chapter makes it easy to understand.The concept of voltage drop testing is explained
using colored diagrams and concrete examples of typical electrical problems found on

Chapter 3 – Electronic Testing Tools
From test lights to digital multimeters, electronic test tools are discussed. Features and
benefits of logic probes, short finders, ignition coil testers and lab scopes are explained.

Chapter 4 – Storage Battery
How a battery works without too much “chemistry” makes it easy to understand how to
test and maintain 12 or 6-volt storage batteries. Information of motorcycle battery
chargers as well as generic battery testing is included.

Chapter 5 – Charging & Starting Systems
Charging system basics are explained including voltage regulation for generators and
alternators. Both street and off-road motorcycles are covered. Electrical testing for
stators, voltage rectifiers, alternators and generators is discussed.

Chapter 6 – Ignition Systems
From points and condenser to modern electronic ignition systems, this chapter explains
how they work and how to test ignition system components. Single, dual and stick types
of ignition coils are discussed as well as high voltage secondary wiring.

Chapter 7 – Fuel Injection Systems
An overview of how electronic fuel injection operates is covered in this chapter. In
addition, generic computer sensor testing, open/closed loop feedback systems and
concepts are all discussed.

Chapter 8 – Wiring Diagrams
This chapter covers how to actually “read” a wiring diagram. By using a building block
method of instruction, the reader will learn how to analyze wiring diagrams and use this
knowledge to diagnose common electrical problems. Examples of motorcycle wiring
diagrams are included as well as practical exercises.

Chapter 9 – Trouble Shooting Electrical Systems
A logical approach is outlined for trouble shooting common electrical system problems.
Real-world examples are used to illustrate how the process of diagnosis works. How to
find electrical opens, shorts, and crossover circuits is discussed.

Chapter 10 – Electrical Projects
How to calculate how much electrical power typical motorcycle accessories require and
how to match them to charging system output is discussed. Electrical projects include,
how to connect electrical power to a tank bag, how to install LED brake lights and
flashers, headlight modulators and auxiliary fuse box installation.
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