developed in conjunction with purkeys fleet electric
TRANSCRIPT
16
2650-1734-00 11/12/13
Auto Meter Products Inc.413 West Elm Street Sycamore, IL 60178
Service (815) 899-0801 Toll Free (866)-883-TEST (8378)
www.autometer.com/test
Test Equipment
�
AC-68Trailer Single Pole Circuit Voltage Drop Testing Guide
Developed in conjunction with Purkeys Fleet Electric
2 15
Charging and Motor Circuit Diagram .......................................... 3Charging Circuit (Complete Test) ............................................... 4Charging Circuit (Legs of (+) Circuit Test) ...............................5-6Charging Circuit (Legs of (-) Circuit Test) ................................... 7Motor Circuit (Complete Test) ..................................................... 8Motor Circuit (Legs of (+) Circuit Test) ...................................9-10Motor Circuit (Legs of (-) Circuit Test) .................................. 11-12Warranty ................................................................................... 15Contact Information .................................................................. 16
CONTENTS LIMITED WARRANTY
12 MONTHS FROM DATE OF PURCHASEThe manufacturer warrants to the consumer that this product will be free from defects in material or workmanship for a period of
twelve (12) months from the date of original purchase. Products that fail within this 12 month warranty period will be
repaired or replaced at the manufacturer's option to the consumer, when determined by the manufacturer that the product failed due to defects in material or workmanship. This warranty is limited
to the repair or replacement of parts and the necessary labor by the manufacturer to effect the repair or replacement of the product. In no event shall the manufacturer be responsible for special, incidental or consequential damages or costs incurred
due to the failure of this product. Improper use, accident, water damage, abuse, unauthorized repairs or alterations voids this warranty. The manufacturer
disclaims any liability or consequential damages due to breach of any written or implied warranty on its test equipment.
WARRANTY AND SERVICE INFORMATIONWarranty claims to the manufacturer's service department must be transportation prepaid and accompanied with dated proof of purchase. This warranty applies only to the original purchaser
and is non-transferable. Shipper damage incurred during return shipments is not covered under this warranty. It is the responsibility of the shipper (the customer returning the Test
Equipment) to package the tester properly to prevent any damage during return shipment. Repair costs for such damages will be
charged back to shipper (customer returning the Test Equipment). Protect the product by shipping in original carton or add plenty
of over-pack cushioning such as crumpled up newspaper.
TRAILER SINGLE POLE CIRCUIT VOLTAGE DROP TESTING
14 3
TRAILER SINGLE POLE CIRCUIT VOLTAGE DROP TEST
B/2
D
G/9
H/10
45
6
7
E
F
1.Ba
ttery
Pos
itive
2.Ci
rcui
t Bre
aker
(Hot
Sid
e)3.
Circ
uit B
reak
er (P
rote
cted
Sid
e)4.
Magne
tic S
witc
h In
5.Magne
tic S
witc
h O
ut
A.Ba
ttery
Pos
itive
B.Ci
rcui
t Bre
aker
(Hot
Sid
e)C.
Circ
uit B
reak
er (P
rote
cted
Sid
e)D.
Sing
le P
ole
Positi
veE.
Sing
le P
ole
Testi
ng A
dapt
er P
ositi
veF.
Trai
ler F
ram
e At
Fro
nt O
f Tra
iler
G.Fr
ame
Rail
Batte
ry G
roun
d Co
nnectio
nH.
Batte
ry N
egati
ve
C/3
Out
put (
Mot
or) C
ircui
t
Char
ging
Circ
uit
All w
iring
/com
pone
nts b
elow
are
in
additio
n to
a b
ase
trai
ler w
hen
a lift
gat
e ha
s bee
n ad
ded.
The
se a
re a
ll in
corp
orat
ed w
ith th
e lift
gat
e on
ly.
TRAI
LER
FRAM
E8
6.Pu
mp
Mot
or P
ositi
ve7.
Pum
p M
otor
Neg
ative
8.Fr
ame
Rail
Mot
or G
roun
d Co
nnectio
n9.
Fram
e Ra
il Ba
ttery
Gro
und
Conn
ectio
n10
.Ba
ttery
Neg
ative
CHAR
GIN
G A
ND
MO
TOR
CIRC
UIT
DIA
GRA
M
A/1
4 13
TRAILER SINGLE POLE CIRCUIT VOLTAGE DROP TESTING
12 5
TRAILER SINGLE POLE CIRCUIT VOLTAGE DROP TESTINGTRAILER SINGLE POLE CIRCUIT VOLTAGE DROP TESTING
B/2
D
H/1
04
5
6
7
EC/
3
TEST
ING
SEP
ARA
TE (-
) LEG
S O
F M
OTO
R CI
RCU
IT
Leg
Betw
een
7 an
d 8
MU
ST R
EMO
VE P
OSI
TIVE
CA
BLE
FRO
M M
OTO
R
G/9
F
TRAI
LER
FRAM
E8
1.Ba
tter
y Po
sitiv
e2.
Circ
uit B
reak
er (H
ot S
ide)
3.Ci
rcui
t Bre
aker
(Pro
tect
ed S
ide)
4.Magne
tic S
witc
h In
5.Magne
tic S
witc
h O
ut
A.Ba
tter
y Po
sitiv
eB.
Circ
uit B
reak
er (H
ot S
ide)
C.Ci
rcui
t Bre
aker
(Pro
tect
ed S
ide)
D.
Sing
le P
ole
Positiv
eE.
Sing
le P
ole
Testi
ng A
dapt
er P
ositi
veF.
Trai
ler F
ram
e At
Fro
nt O
f Tra
iler
G.
Fram
e Ra
il Ba
tter
y G
roun
d Co
nnectio
nH
.Ba
tter
y N
egati
ve
Out
put (
Mot
or) C
ircui
t
Char
ging
Circ
uit
6.Pu
mp
Mot
or P
ositi
ve7.
Pum
p M
otor
Neg
ative
8.Fr
ame
Rail
Mot
or G
roun
d Co
nnectio
n9.
Fram
e Ra
il Ba
tter
y G
roun
d Co
nnectio
n10
.Ba
tter
y N
egati
ve
MU
ST E
NER
GIZ
E M
AG
NET
IC S
WIT
CH
DU
RIN
G T
EST
MO
TOR
CIRC
UIT
A/1
6 11
TRAILER SINGLE POLE CIRCUIT VOLTAGE DROP TESTING TRAILER SINGLE POLE CIRCUIT VOLTAGE DROP TESTING
B/2
D
H/1
04
5
6
7
EC/
3
TEST
ING
SEP
ARA
TE (-
) LEG
S O
F M
OTO
R CI
RCU
IT
Leg
Betw
een
7 an
d 9
MU
ST R
EMO
VE
POSI
TIV
E CA
BLE
FRO
M M
OTO
R
G/9
F
TRAI
LER
FRAM
E8
1.Ba
tter
y Po
sitiv
e2.
Circ
uit B
reak
er (H
ot S
ide)
3.Ci
rcui
t Bre
aker
(Pro
tect
ed S
ide)
4.Magne
tic S
witc
h In
5.Magne
tic S
witc
h O
ut
A.Ba
tter
y Po
sitiv
eB.
Circ
uit B
reak
er (H
ot S
ide)
C.Ci
rcui
t Bre
aker
(Pro
tect
ed S
ide)
D.
Sing
le P
ole
Positiv
eE.
Sing
le P
ole
Testi
ng A
dapt
er P
ositi
veF.
Trai
ler F
ram
e At
Fro
nt O
f Tra
iler
G.
Fram
e Ra
il Ba
tter
y G
roun
d Co
nnectio
nH
.Ba
tter
y N
egati
ve
Out
put (
Mot
or) C
ircu
it
Char
ging
Cir
cuit
6.Pu
mp
Mot
or P
ositi
ve7.
Pum
p M
otor
Neg
ative
8.Fr
ame
Rail
Mot
or G
roun
d Co
nnectio
n9.
Fram
e Ra
il Ba
tter
y G
roun
d Co
nnectio
n10
.Ba
tter
y N
egati
ve
MU
ST E
NER
GIZ
E M
AG
NET
IC S
WIT
CH
DU
RIN
G T
EST
MO
TOR
CIRC
UIT A
/1
10 7
TRAILER SINGLE POLE CIRCUIT VOLTAGE DROP TESTING
B/2
D
H/10
45
6
7
EC/
3
TEST
ING
SEP
ARAT
E LE
GS
OF
( -) C
IRCU
IT
Leg
Betw
een
F an
d G
G/9
F
TRAI
LER
FRAM
E8 1.
Batte
ry P
ositi
ve2.
Circ
uit B
reak
er (H
ot S
ide)
3.Ci
rcui
t Bre
aker
(Pro
tect
ed S
ide)
4.Magne
tic S
witc
h In
5.Magne
tic S
witc
h O
ut
A.Ba
ttery
Pos
itive
B.Ci
rcui
t Bre
aker
(Hot
Sid
e)C.
Circ
uit B
reak
er (P
rote
cted
Sid
e)D.
Sing
le P
ole
Positi
veE.
Sing
le P
ole
Testi
ng A
dapt
er P
ositi
veF.
Trai
ler F
ram
e At
Fro
nt O
f Tra
iler
G.Fr
ame
Rail
Batte
ry G
roun
d Co
nnectio
nH.
Batte
ry N
egati
ve
Out
put (
Mot
or) C
ircui
t6.
Pum
p M
otor
Pos
itive
7.Pu
mp
Mot
or N
egati
ve8.
Fram
e Ra
il M
otor
Gro
und
Conn
ectio
n9.
Fram
e Ra
il Ba
ttery
Gro
und
Conn
ectio
n10
.Ba
ttery
Neg
ative
CHAR
GIN
G C
IRCU
IT
A/1
TRAILER SINGLE POLE CIRCUIT VOLTAGE DROP TESTING
B/2
D
H/1
04
5
6
7
EC/
3
TEST
ING
SEP
ARA
TE (+
) LEG
S O
F M
OTO
R CI
RCU
IT
Leg
Betw
een
6 an
d 5
MU
ST R
EMO
VE
POSI
TIV
E CA
BLE
FRO
M M
OTO
R
G/9
F
TRA
ILER
FRA
ME
8
1.Ba
tter
y Po
sitiv
e2.
Circ
uit B
reak
er (H
ot S
ide)
3.Ci
rcui
t Bre
aker
(Pro
tect
ed S
ide)
4.Magne
tic S
witc
h In
5.Magne
tic S
witc
h O
ut
A.
Batt
ery
Positiv
eB.
Circ
uit B
reak
er (H
ot S
ide)
C.Ci
rcui
t Bre
aker
(Pro
tect
ed S
ide)
D.
Sing
le P
ole
Positiv
eE.
Sing
le P
ole
Testi
ng A
dapt
er P
ositi
veF.
Trai
ler F
ram
e At
Fro
nt O
f Tra
iler
G.
Fram
e Ra
il Ba
tter
y G
roun
d Co
nnectio
nH
.Ba
tter
y N
egati
ve
Out
put (
Mot
or) C
ircu
it
Char
ging
Cir
cuit
6.Pu
mp
Mot
or P
ositi
ve7.
Pum
p M
otor
Neg
ative
8.Fr
ame
Rail
Mot
or G
roun
d Co
nnectio
n9.
Fram
e Ra
il Ba
tter
y G
roun
d Co
nnectio
n10
.Ba
tter
y N
egati
ve
MU
ST E
NER
GIZ
E M
AG
NET
IC S
WIT
CH
DU
RIN
G T
EST
MO
TOR
CIRC
UIT
A/1
8 9
TRAILER SINGLE POLE CIRCUIT VOLTAGE DROP TESTING
B/2
D
H/10
45
6
7
EC/
3
TEST
ING
CO
MPL
ETE
OU
TPU
TCI
RCU
ITPo
sitive
Circ
uit
Neg
ative
Circ
uit
MU
ST E
NER
GIZ
E M
AGN
ETIC
SW
ITCH
DURI
NG
TES
T
MU
ST R
EMO
VE P
OSI
TIVE
CAB
LE F
ROM
MO
TOR
G/9
F
TRAI
LER
FRAM
E8
1.Ba
ttery
Pos
itive
2.Ci
rcui
t Bre
aker
(Hot
Sid
e)3.
Circ
uit B
reak
er (P
rote
cted
Sid
e)4.
Magne
tic S
witc
h In
5.Magne
tic S
witc
h O
ut
A.Ba
ttery
Pos
itive
B.Ci
rcui
t Bre
aker
(Hot
Sid
e)C.
Circ
uit B
reak
er (P
rote
cted
Sid
e)D.
Sing
le P
ole
Positi
veE.
Sing
le P
ole
Testi
ng A
dapt
er P
ositi
veF.
Trai
ler F
ram
e At
Fro
nt O
f Tra
iler
G.Fr
ame
Rail
Batte
ry G
roun
d Co
nnectio
nH.
Batte
ry N
egati
ve
Out
put (
Mot
or) C
ircui
t
Char
ging
Circ
uit
6.Pu
mp
Mot
or P
ositi
ve7.
Pum
p M
otor
Neg
ative
8.Fr
ame
Rail
Mot
or G
roun
d Co
nnectio
n9.
Fram
e Ra
il Ba
ttery
Gro
und
Conn
ectio
n10
.Ba
ttery
Neg
ative
MO
TOR
CIRC
UIT
A/1
TRAILER SINGLE POLE CIRCUIT VOLTAGE DROP TESTING
B/2
D
H/10
45
6
7
EC/
3
TEST
ING
SEP
ARAT
E (+
) LEG
S O
F M
OTO
R CI
RCU
IT
Leg
Betw
een
6 an
d 4
MU
ST R
EMO
VE P
OSI
TIVE
CAB
LE F
ROM
MO
TOR
G/9
F
TRAI
LER
FRAM
E8
1.Ba
ttery
Pos
itive
2.Ci
rcui
t Bre
aker
(Hot
Sid
e)3.
Circ
uit B
reak
er (P
rote
cted
Sid
e)4.
Magne
tic S
witc
h In
5.Magne
tic S
witc
h O
ut
A.Ba
ttery
Pos
itive
B.Ci
rcui
t Bre
aker
(Hot
Sid
e)C.
Circ
uit B
reak
er (P
rote
cted
Sid
e)D.
Sing
le P
ole
Positi
veE.
Sing
le P
ole
Testi
ng A
dapt
er P
ositi
veF.
Trai
ler F
ram
e At
Fro
nt O
f Tra
iler
G.Fr
ame
Rail
Batte
ry G
roun
d Co
nnectio
nH.
Batte
ry N
egati
ve
Out
put (
Mot
or) C
ircui
t
Char
ging
Circ
uit
6.Pu
mp
Mot
or P
ositi
ve7.
Pum
p M
otor
Neg
ative
8.Fr
ame
Rail
Mot
or G
roun
d Co
nnectio
n9.
Fram
e Ra
il Ba
ttery
Gro
und
Conn
ectio
n10
.Ba
ttery
Neg
ative
MU
ST E
NER
GIZ
E
MAG
NET
IC S
WIT
CH
DURI
NG
TES
TM
OTO
R CI
RCU
IT A/1