Ford 2013 F-650 Owner's Manual page 202

Relay Center
R1 R2
R9 R10 R11
R18 R19 R20
The relay center is located along the passenger side A-pillar on the right
side of the footwell.
Relay
Location
R1 Spring applied hydraulic release warning chime module or
PCM power VPWR 2, 3 and 4
R2 A/C compressor clutch
R3 Power windows
R4 Flasher (standard/LED)
R5 Upfitter relay 1
R6 Upfitter relay 2
R7 Headlights
R8 Spare
R9 Upfitter relay 3
R10 Starter
R11 DCU (diesel engine only)
R12 Two–speed axle/Differential lock
R13 Door lock
R14 Air tank moisture valve
R15 DRL #1
R16 Heated mirrors
R17 Spare
R18 Upfitter relay 4
2013 F-650/750 (f67)
Owners Guide gf, 2nd Printing, March 2013
USA (fus)
Fuses
R3 R4 R5
R12 R13 R14
R21 R22 R23
Relay Description
201
R6 R7 R8
R15 R16 R17
R24 R25 R26