Ford 2004 Econoline Owner's Manual page 156

Roadside Emergencies
Relay modules
Instrument panel relay module
The instrument panel relay module is located behind the radio in the
center of the instrument panel. Have a certified technician or your dealer
service this module, if required.
The relays are coded as follows:
Relay location
1
2
3
4
Engine compartment relay module
The engine compartment relay module is located in one of two places
depending on which type of engine your vehicle is equipped with:
• Gasoline engine: driver side of the engine compartment above the
brake master cylinder.
156
2004 Econoline (eco)
Owners Guide (post-2002-fmt)
USA English (fus)
Description
Interior lamps
Open
Roof marker lamps
Battery saver