1993 Jeep Cherokee


How To Use The Wiring Diagrams



The wiring diagrams and technical service bulletins,

containing wiring diagram changes, are obtained from the domestic and import manufacturers. These are checked for accuracy and are all redrawn into a consistent format for easy use.

All diagrams are arranged with the front of the vehicle at the left side of the first page and the rear of the vehicle at the right side of the last page. Accessories are shown near the end of the diagram.

Components are shown in their approximate location on the vehicle. Due to the constantly increasing number of components on vehicles today, it is impossible to show exact locations.

In the past, when cars were simpler, diagrams were simpler. All components were connected by wires, and diagrams seldom exceeded 4 pages in length. Today some wiring diagrams require more than 16 pages. It would be impractical to expect a service technician to trace a wire from page 1 across every page to page 16.

Removing some of the wiring maze reduces eyestrain and time wasted searching across several pages. Today, the majority of diagrams now follow a much improved format, which permits space for internal switch details and connector shapes.

Any wires that dont connect directly to their components are identified on the diagram to indicate where they go. There is a legend on the first page of each diagram, detailing component location. It refers you to sub-systems, using grid NUMBERS at the top and bottom of the page and grid LETTERS on each side. This grid system works in a manner similar to that of a road map.


  1. On the first page of the diagram, you will find a listing
    of major electrical components or systems. Locate the specific
    component or system you wish to trace. A grid number and letter will
    follow the components name.

  2. Use the grid NUMBERS (arranged horizontally across the top
    and bottom of each page) to find the page of the wiring diagram that
    contains the component youre seeking. When you reach this page, use
    the grid LETTERS on the side of the page to determine the components
    vertical location.

  3. Locate the circuit you need to service. The internals are
    shown for switches and relays to assist you in understanding how the
    circuit operates.

NOTE: In some of the newer wiring diagram articles in this

product, there is a Legend for the wiring diagrams that has been created to make locating components easier. For these articles, there will be a COMPONENT LOCATION MENU title in the article main menu. These articles will also have the original legend available on the first graphic.

Fig. 1: Identifying Tie-Off Symbols

  1. If the wires are not drawn all the way to another
    component (across several pages), a reference will tell you their
    final destination.

  2. Again, use the legend on the first page of the wiring
    diagram to determine the grid number and letter of the referenced
    component. You can then turn directly to it without tracing wires
    across several pages.

  3. The symbols shown in Fig. 1 are called tie-offs. The first
    tie-off shown indicates that the circuit goes to the temperature
    sensor, and is also a ground circuit.

  4. The second symbol indicates that the circuit goes to a
    battery positive parallel circuit. The third symbol leads to a
    particular component and the location is also given.

  5. The lines shown in Fig. 2 are called options. Which path
    or option to take depends on what engine or systems the vehicle has.

Fig. 2: Identifying Option Symbols



Color Normal Optional

Black BLK BK


Brown BRN BN

Clear CLR CR

Dark Blue DK BLU DK BU

Dark Green DK GRN DK GN

Green GRN GN


Light Blue LT BLU LT BU

Light Green LT GRN LT GN

Orange ORG OG


Purple PPL PL



Voilet VIO VI

White WHT WT

Yellow YEL YL


NOTE: Standard wiring symbols are used on diagrams. The list below will help clarify any symbols that are not easily understood at a glance. Most components are labeled "Motor", "Switch" or "Relay" in addition to being drawn with the standard symbol.


Views of the symbols used in the WIRING DIAGRAM articles are in the following graphics. See Figs. 3 through 25.

Fig. 3: Circuit Breaker

Fig. 4: Coil (Internal)

Fig. 5: Connector

Fig. 6: Diode (In-Line)

— ►] DIODE (Internal)

Fig. 7: Diode (Internal)

Fig. 7: Diode (Internal)

Fig. 8: Diode (Light Emitting)

Fig. 9: Defogger Grid

Fig. 10: Fuse

Fig. 11: Fusible Link

Fig. 12: Ground

Fig. 13: Glow Plug Resistor (In-Line) or Mirror Heater

Fig. 14: Injector (Diesel) or Photocell (Gasoline)

Fig. 15: Internal Fuse, Thermal Limiter

Fig. 16: Lamp (Dual Element)

Fig. 17: Lamp (Single Element)

Fig. 18: Motor

■VWWW- RESISTOR (Internal)

Fig. 19: Resistor (Internal)

Fig. 19: Resistor (Internal)

Fig. 20: Sensor, Thermistor

Fig. 21: Solenoid

Fig. 22: Solid State Device, Transistor

Fig. 23: Switch (Internal)

Fig. 24: Two Pin Switch

Fig. 25: Variable Resistor or Potentiometer