For 1990-2009 cars

The fuse is the most common method of an automotive wiring circuit protection. Whenever there is an excessive amount of current flowing through a circuit the fusible element will melt and create an open or incomplete circuit. Fuses are an one time protection device and must be replaced each time the circuit is overloaded. To determine if a fuse is open, remove the suspected fuse and examine the element in the fuse for an open (break). If not broken, also check for continuity using a DMM or a continuity tester. If the element is open or continuity is suspect, replace the fuse with one of equal current rating.

#### Fuse Types

Current Rating Amperes | Color
--- | ---
Auto Fuses, Mini Fuses
2 | Gray
3 | Violet
5 | Tan
7.5 | Brown
10 | Red
15 | Blue
20 | Yellow
25 | White or Natural
30 | Green
Maxi Fuses
20 | Yellow
30 | Light Green
40 | Orange or Amber
60 | Blue
50 | Red