Ford Super Duty F-250, F-350 Pickup, Excursion Repair Manual 1999-2010

The electrical system is a 12-volt, negative ground type. Power for the lights and all electrical accessories is supplied by a lead/acid-type battery which is charged by the alternator.

The Chapter covers repair and service procedures for the various electrical components not associated with the engine. Information on the battery, alternator, distributor and starter motor can be found in Chapter 5.

It should be noted that when portions of the electrical system are serviced, the negative battery cable(s) should be disconnected from the battery(ies) to prevent electrical shorts and/or fires.

(Refer to illustrations 2.5a, 2.5b, 2.6 and 2.9).

A typical electrical circuit consists of an electrical component, any switches, relays, motors, fuses, fusible links or circuit breakers related to that component and the wiring and connectors that link the component to both the battery and the chassis. To help you pinpoint an electrical circuit problem, wiring diagrams are included at the end of this Chapter.

1. Tune-up and routine maintenance
2. 5.4L V8 gasoline engine
3. 6.8L V10 gasoline engine
4. 6.0L, 6.4L and 7.3L V8 turbo diesel engines
5. General engine overhaul procedures
6. Cooling, heating and air-conditioning systems
7. Fuel and exhaust systems
8. Engine electrical systems
9. Emissions control systems
10. 5- and 6-speed manual transmission
11. 4-speed automatic transmission
12. Transfer case
13. Clutch and driveline
14. Brakes
15. Suspension and steering systems
16. Body
17. Chassis electrical system
18. Wiring diagrams