Chapter 8 Assignment

Perform the following exercises.  The required results are marked in red text. If you cannot obtain a wiring schematic for your vehicle, contact your instructor and arrange to come to WSU to use one, or obtain access to online schematics.

• Schematic Reading

• • Obtain an automobile or truck.

  • Obtain a wiring diagram for that vehicle.

  • Find the headlamp circuit wiring diagram.

  • Identify each of the components and symbols shown on the schematic.

  • 1. Does your vehicle have daytime running lights (DRL)?  If so, is the DRL accomplished by putting the highbeam lights in series with each other, or some other method?

  • 2. How many headlights does your vehicle have?

  • 3. Can any other computer or component activate the headlights besides the headlight switch?

  • 4. What size fuse(s) protects your headlight circuits?

  • 5. Where is/are the fuse(s) for the headlights located?

• Horn Circuit

• • Obtain an automobile or truck.

  • Obtain a wiring diagram for that vehicle.

  • Find the horn circuit wiring diagram.

  • Identify and locate on the vehicle each of the components shown on the horn schematic.

  • 6. How many horns are used on your vehicle?

  • 7. Can any other computer or component activate the horns besides the horn switch on the steering wheel?

  • 8. What size fuse protects your horn circuits?

  • 9. Where is/are the fuse(s) for the horns located?