Know the Probability of Certain Conditions Developing

^ Look for the simple rather than the complex.
^ For example:
- Electrical conditions usually occur at connections rather than components.
- An engine no-start is more likely to be caused by a loose wire or small adjustment rather than a sheared-off camshaft.
^ Know the difference between impossible and improbable. Certain failures in a system can be improbable but still happen.
^ New parts are just that, new. It does not mean they are always good functioning parts.