Auxiliary relay box
The relay box is located in the engine compartment on the left fender.
•
With Daytime Running Lamp (DRL) or 4x4 options
•
Without Daytime Running Lamp (DRL) and 4x4 options
The relays are coded as follows:
Fuse/Relay
Location
Fuse Amp
Rating
Description
F03
5A
Clockspring illumination
R01
Full ISO Relay
4x4 CCW
R02
Full ISO Relay
4x4 CW
R03
1
⁄
2
ISO Relay
Daytime Running Lamps (DRL) high
beam disable
R201
Relay
DRL
R202
Relay
A/C clutch
D01
Diode
A/C clutch
D02
Diode
One Touch Integrated Start (OTIS)
2008 F-150
(f12)
Owners Guide (post-2002-fmt)
USA
(fus)
Roadside Emergencies
306