1
2
3
4
5
6
7
8
A
B
C
D
E
F
G
H
I
J
K
L
M
N
October 2013
Section 6 • Schematics
6 - 68
S-40 • S-45
Part No. 102521
Electrical Schematic
Ford LRG-425 EFI Models
(before serial number 7597)
ST
AR
TER
MOT
OR
H2
REGULATOR
-
IND.
AUXILIAR
Y
PUMP
AUXILIAR
Y
POWER
RELA
Y
SER
VICE
HORN
SER
VICE
HORN
RELA
Y
LEVEL
SENSOR
TIL
T
ALARM
BRN
BK
OR/BK-41
+
+
BAT.
STA.
BAT.
-
ALTERNATOR
EXCT.
RD-P134
RD-27
RD/BK-28
BK-43
CR5
NO
CR5
PR1
RD
WH
NO
PR1
IGN./ST
AR
T
RELA
Y
HOUR
METER
_
SWITCH
FUEL
RELA
Y
OIL
PRESSURE
SWITCH
NC
OTS
NO
OPTION
GENERA
T
OR
BK-33
+
WH/RD-24
WH/BK-24
OPS
TB25
TB26
WH-21
NO
CR1
CR1
CR2
NO
TB21
CR2
GR/WH-45
TB41
C41RPM
OR/BK
15AMP.
TB20
CB2
RD
RD
15AMP.
CB1
RD
P23BA
T
WH
C28TT
A
RD/BK
C27AUX
RD
TB23
TB28
RD
TB27
C2-5
TS51
C1-2
C7-2
C1-1
TS1
C9-1 BK
RD-(FS)
WH-(FS)
BK-(FS)
FS1
C9-2
C9-3
C33STR
BK
TB33
BK
TS52
C1-7
C45GEN
GR/WH
TB45
C2-7
TS2
P24FS WH
P25FS RD
P26ESTP BK
BRN
BK/RD
C35ESPD
BK/RD
HIGH
RPM
LOW
RPM
TB35
TS55
RD
RD
WH
BK
OR/BK
C1-9
GENERA
T
OR
G2
G3
G1
VOL
T
METER
OIL
PRESSURE
GAUGE
DGRN
(FEH
242)
RD
(FEH
361A)
LPG
LOCKOUT
SOLENOID
HARNESS
ENGINE
FORD
42
PIN
PLUG
FUEL
PUMP
FORD
BK/WH
(FEH
72)
PIN7
BL/WH
(FEH
787)
PIN5
OR/RD
(FEH
307A)
PIN23
WH
(FEH
16A)
PIN1
BR
(FEH
570C)
PIN34
PUMP
FUEL
BK/RD
(FEH
458)
PIN3
WH
(FEH
306)
PIN24
BL
(FEH
658)
PIN6
TB24
TB24
TS3
TS53
TB39
TEST
RUN
TS22
P24BAT
C35RPM2
C39LP
C21
1GN2
TSW
C38ESL
C6-39
C5-13
C5-12
C5-17
C5-10
C5-9
C5-1
1
C5-15
C5-16
C5-14
C5-5
C6-27
C6-28
C6-23
TB43
C6-16
C5-2
C5-3
C2-1
FAN
(OPTION)
COOLING
F
AN
TEMP
.
SWITCH
HYDRAULIC
OIL
NO
OTS
CR17
NO
CR17
CB3
20AMP.
C6-33
C6-34
C6-25
TB134
P1
RD
TB22
PLAT
GRD
KS1
RD
C134PWR
OR/RD
C2-4
P22BA
T
BK
HORN
C7-1
H1
P3
RD
L4
P2
C28TTA RD/BK
RD/BK
C133PLA
OR/RD
C4-4
C2-3
TB133
L48
D40
D39
OPTION FLASHING
BEACONS
FB
W
A
TER
TEMP
GAUGE
W
A
TER
TEMP
NOTE:
2) THIS WIRE FOR UNITS WITHOUT GENERATOR OPTION.
IN THE STOWED POSITION AND KEYSWITCH "OFF".
1) ALL SWITCHES AND CONTACTS ARE SHOWN WITH THE BOOM
D6
HIGH
RPM(FS)
SEE NOTE 2
TS4
TS17
C6-26
LP
GAS
FUEL
PUMP
AUXILIAR
Y
LP
GAS
FUEL
FUNCTION
ENA.
PUMP
AUXILIAR
Y
HM
ST
AR
T
ENGINE
ST
AR
T
ENGINE
12 V
DC
PUMP
AUX
STARTER
L2
6
BATTERY
7
10
9
8
ENG. FAULT
KEY BYPASS
IGN./FUEL ON
KEY PWR.
4
3
5
2
1
AUX. ON
GROUND
TACHOMETER
START INPUT
IGN./START
MODULE
START RELAY
TB 134 IS WAGO TERMINAL BLOCK 42
Property of American Airlines