156
Br
a
ke
Lig
wit
ht
ch
40
ird
ke
S
8
2C
10
Th
28
h
29
9A
9B
Bra
Dimmer
Connector
Dome Feed
Horn
Relay
Connector
17B
17A
40B
Switc
2D
2A
Brake
20 Circuit Wiring Kit
Instructions
910-64027
156
12 V Battery
40A
10
page 2
Brake Switch
Wires
page 3
Fuse Box Connections
300
4D
4C
4B
4A
43
107
page 3
39
104
93
2F
2E
2D
2C
2B
40
69A
102
101
105
2G
2F
2E
3A
8B
40A,B
Radio / Heater
AC Feed
69A
27
page 3
150
8
39
14B 15B
35
nder
uge Se
Gas Ga
Light
rake
B
d
ir
Th
Right Rear Turn
Rear Running Lights
Left Rear Turn
an Feed
Electric F
Horn Feed
Headlight Low Beam
Headlight High Beam
Sender
Oil Pressure
Temp S
ender
Water
nt
Tu
rn
ft F
La
ron
mp
tT
urn
Fro
La
nt
mp
Pa
rk
Lig
hts
Coi
l to
Tac
hom
ete
r
12 V
Igniti
on
Wiper
Le
Fro
ht
Rig
o
Se
31
Ta
D
17B
ge
nd
ch
er
om
11A
E
30
au
il t
F
19
G
Co
G
9B
J
18
A
300
150
17
29
18
12
19
11A
106
as
hts
31
27
105
d
In
am r
Be e
h end
ig
H e S er
r
nd
su
es Se
Pr mp
Ind
il
O r Te urn
e ht T
at
Ind
W Rig urn
ft T
tion
Igni
104
G
Le
103
16
28
102
12 V
35
50
d
page 4
107
h Lig
93
100
Groun
Instrument
Cluster
Lead
Wires
Das
3A
43
page 6
Ground
121
o
Radi
CB Radio
ter/A
C fe
ed
Turn
Signal
Switch
Connector
Rear Body
Feed Wires
101
Hea
page 6
Accessory
Feed Wires
9A
C
8A
2A
at
B
lock
page 5
page 2
14A
4A
Ignition Switch
Lead Wires
Engine
Compartment
Feed Wires
15A
4B
H
2G
16
Ignition Sw Accy
Alternator Ign
103
3B
106
Headlight
Switch
Connector
K
50
3B
L
4D
100
Ignition Feed
M
16
4C
2B
N
16
(viewed from underside)
attery
12 V B
P
INSTRUCTIONS
Main Power
Feed from
Starter
11A,B
12
15A
15B
14A
14B
et
er
30
121
© September 2013, Speedway Motors, Inc.
1
910-64027_10/16/14
INSTRUCTIONS
20 Circuit Wiring Kit
Instructions
910-64027
Fuse Panel, Engine Compartment
FUSE
AMPS
Front of Vehicle Connections
1. Run the dark green horn feed [29] wire to the positive connection on your horn.
2. Run the orange electric fan wire [300] to a fan relay. This wire will trigger the fan relay and
should be run to terminal 85 of the relay.
Headlight Connector
Ground
High Beam
11A
Route the dome light ground wire [156] to the dome
light. This wire allows the headlight switch to turn on
the dome light.
Low Beam
31
11A,B
p Sender
ter TemDimmer
Switch
Connector
Wiper
12
V Ignition
il to Tac
homete
ont P
r
ark L
Fron
tT
ights
10
35
93
3A
121
31
35
93
12 V Ignition
Coil to T
achome
t Par
11A
k Lig
ter
hts
Left
Fron
t Tu
Rig
rn L
ht F
amp
ron
t Tu
rn L
am
p
3A
121
9A
14A
15A
High Beam
11A
an
c
Ele
eed
am
12 orn F
w Be
H
o
L
t
dligh
m
Hea
h Bea
ght Hig
li
d
a
e
H
der
ure Sen
s
s
e
r
P
Oil
Water Temp Sender
F
Low Beam
tric
Wiper
Coil to T
achome
Fron
Left
Rig
t Par
k Lig
Fron
ht F
ter
hts
t Tu
ron
rn L
t Tu
rn L
amp
am
p
11. Run the light blue left front turn [14A] to the left front directional lamp. This would be
connected to the high side if you’re using a dual filament bulb for park/turn.
12
11A
31
35
93
12 V Ignition
6. Run the pink ignition feed [3A] wire to Ground
either the battery side of a GM HEI distributor or the
High Beam
ballast resistor on a points style distributor. If you’re using an after market
ignition modules
please follow its instructions for specific directions.
11A
7. Run the white wiper feed wire [93] to the wiper motor positive side connection.
10. Run the dark blue right front turn [15A] to the right front directional lamp. This would be
connected to the high side if you’re using a dual filament bulb for park/turn.
29
d
Fee
5. Run the dark blue oil pressure sender wire [31] to the oil pressure sender.
9. Run the white coil-tachometer wire [121] wire to the tach terminal
12 on a GM HEI distributor,
the negative side of the coil, or to a tach connector on a after market ignition module.
300
3A
121
9A
14A
Engine Compartment Feed Wires
28 11A
Wiper
Fron
12
2D
eed
m
Bea
w
o
L
ight
am
igh Be
light H
r
e Sende
Pressur
29
40A
Engine Compartment Feed Wires
an
d
Fee
am
n
w Be
Hor
o
L
t
dligh
m
Hea
h Bea
ht Hig
g
li
d
a
He
nder
sure Se
Oil Pres
Dome Courtesy
r Temp Sender
WateFeed
29
Ground
12
4. Run the dark green water temp sender [35] to the water temperature sender.
8. Run the brown park lights [9A] wire to a splice then to both of the front park lights. If you are
Beam
using a duel filament bulb it should be connected to the low Low
filament.
29
Main Wiring Bundle
Horn Relay
Connector
12
Headlight Connector
300
Engine Compartment Feed Wires
E
3. Run the light green headlight high beam [11A] and tan headlight low beam [12] to the front
of the vehicle. You will have to splice this wire so you can run it to both headlights. Connect
these wires along with the headlight ground wires to the connectors as per the diagram on
this page.
Headlight Connector
Horn and Dimmer Plugs
156
20
30
10
This fuse panel is designed to be mounted under
a dash away from the elements. It should not be
exposed to the elements.
300
20
30
5
Fuse Panel
Fee
15
15
30
ed
10
10
20
e
Plug the horn relay and dimmer switch intoFatheir
nF
c
i
tr
respective connectors.
lec
d
5
5
15
Insure the dome light feed wire [40A] is routed to the
proper location. This system uses a switched ground
system for the dome light using the headlight switch
and door switches.
FUSE
AMPS
FUSE
AMPS
WIRE #
COLOR
PRINTING
11A
Light Green
Headlight High Beam
14A
Light Blue
Left Front Turn
9A
Brown
Park Lights
Orange
Electric Fan
15A
Dark Blue
29
Dark Green
35
Dark Green
93
White
300
31
3A
121
40A
156
Right Front Turn
Horn
Water Temp
Dark Blue
Oil Pressure
Pink
Ignition
Wiper
White
Tachometer
Gray
Dome Ground
Orange
Dome
15A
© September 2013, Speedway Motors, Inc.
2
910-64027_10/16/14
INSTRUCTIONS
20 Circuit Wiring Kit
Instructions
910-64027
Rear, Power, Brakes and Accessory
Rear Body Feed Wires
12 V Battery
Rear Running Lights
9B
19
30
urn
Right Rear T
der
ge Sen
u
a
G
s
Ga
ght
ke Li
a
r
B
Third
17B
Rear Connections
Accessory
Feed Wire
Connections
Brake
Bra
103
Run the brown rear running lights [9B] to the rear of the
vehicle, it will need to be spliced to run to both lights.
This wire should be connected to the low side of a dual
filament bulb.
2A
Switch
40B
Sw
itch
Br
ak
eL
Main Power
Feed from Starter
17A
igh
t
Brake Switch
Lead Wires
Power and Brake Connections
17B
Connect the main battery wire [2A] to the “bat” stud on a
GM starter solenoid or the battery side of a ford starter
relay. Use the included fusible link wire marked 12V
battery, to perform this task.
105
106
102
Headlight Switch
Connector
9A
156
8
9B
Run the tan gas gauge [30] wire to the sending unit on
the fuel tank.
Run the dark green right rear turn signal wire [19] to the
right rear directional light. This should be connected to
the high side of a dual filament bulb.
ird
104
Run the light blue third brake light wire [17B] to the third
brake light positive side. If you are not using a third
brake light this wire can be either taped into the harness
or removed.
Run the yellow left rear turn signal wire [18] to the left
rear directional light. This should be connected to the
high side of a dual filament bulb.
ke
Th
107
Main Wiring Bundle
18
Left Rear Turn
40
Run the orange brake switch wire [40B] to the input side
of the brake light switch
Run the white brake switch wire [17A] to the output side
of the brake light switch
2C
8
Run the light blue third brake light wire [17B] to the
output side of the brake light switch if using a third
brake light. If you are not using a third brake light this
wire can be removed or taped into the harness.
10
Accessory Wires
The kit is designed with 5 accessory fused circuits. These
are all plugged into one plug, the kit includes the spades
required to attach into this plug.
ACCESSORY FEED WIRE CONNECTION
WIRE #
TYPE
COLOR
PRINTING
102
Battery
Orange
12 Volt Battery Fused
103
Ignition
Tan
Fuel Pump
104
Battery
Orange
Power Seats
105
Battery
Red
Power Locks
106
Ignition
Pink
Power Windows
107 Accessory
Brown
Ignition Sw Accy
HEADLIGHT SWITCH CONNECTOR
WIRE #
COLOR
9A
Brown
8
Gray
2C
Red
156
9B
10
40
“8”
Optional
White
Brown
Yellow
Orange
Brown
PRINTING
Dome Light Ground
Alternate full-time front parking lamp
(parking lights stay on with headlights)
Dash Panel Lights
Battery Feed
Rear Tail Lamp
Headlight Dinner
Fused Battery Feed
Front Parking Lamp
(parking lights off with headlights are on)
© September 2013, Speedway Motors, Inc.
3
910-64027_10/16/14
150
Ground
Dash Lights
8
2
0
1
0
..
10
F ...
250
Temp
RIGHT TURN IND
HIGH BEAM IND
11A
t
gh
ft
Ri
Le
Hi
g
h
am
In
d
Be
n
Tu
r
nd
nI
In
d
Dash Lights
15B
14B
Tu
r
Gray
Ground
210
Das
h Lig
hts
Grou
nd
VSS Signal
12 V Ignition
180
8
er
p Send
Gas Gauge Sender
8
150
35
Water
Tem
Tan
Black
Sender
Tachometer
30
150
Oil Pressure
Oil Pressure
Purple
Pink
31
Water Temp
401
39
Coil to Tachometer
White
Dark Blue
r
121
31
ende
Dark Green
ge S
35
Vehicle
Speed
Senor (VSS)
Gau
Left Front Turn
Right Front Turn
121
Gas
Light Blue
Dark Blue
tion
14B
15B
Oil Press
Tachometer
LEFT TURN IND
Igni
Headlight High Beam
30
12 V
Light Green
40
80
39
PRINTING
11A
60
9
401
al
COLOR
40
Symbol for Ground
Sign
WIRE #
20
8
. E
Speedometer
Fuel
VSS
The diagram above shows a typical electrical gauge wiring
system. If you use a mechanical speedometer you will only
require the gauge lighting to go to it, same for a mechanical
tachometer. Vehicle speed sensor wires are supplied in
the sub kit 910-64027-4, for mechanical speedometers
these can be ignored. Always follow gauge manufactures
instructions and vehicle speed sensor instructions for
specific installation.
.
7
16
Volts
INSTRUMENT CLUSTER WIRING
..½ ......
...
...
6
3
120 130
110
14
5
4
0
12
0 10 20 30 4
0
08
60 7 0 90 1
0
50
1
20 Circuit Wiring Kit
Instructions
910-64027
Instrument Cluster
100
INSTRUCTIONS
VSS Ground
Red wire from 12 volt
source not included
Main Wiring Bundle
Instrument Cluster Lead Wires
© September 2013, Speedway Motors, Inc.
4
910-64027_10/16/14
Alternator and Starter Connections
INSTRUCTIONS
20 Circuit Wiring Kit
Instructions
910-64027
TYPICAL
IGNITION
SWITCH
NEU
IGN
ACC
BAT
ALTERNATOR AND
STARTER WIRING
4B
IGNITION SWITCH WIRING
"BAT"
stud
3B
Run the brown ignition switch accessory [4B]
wire to the accessory terminal on your ignition
switch.
Run the purple starter solenoid wire to the neutral safety
switch to the S terminal on a GM starter solenoid.
R
Run the purple neutral safety switch wire from the
solenoid terminal on the ignition switch to the neutral
safety switch. If you are not running a neutral safety
switch this wire can be extended and run straight to the S
terminal on your starter.
S
STARTER
SOLENOID
2B
Run the red 12V battery [2B] wire to the battery
terminal on your ignition switch.
Run the pink ignition feed [3B] wire to the
ignition terminal on your ignition switch.
NEUTRAL
SAFETY
SWITCH
Main Wiring Bundle
Main Power
Feed from
Starter
Ignition
Switch Lead
Wires
WIRE #
COLOR
PRINTING
3B
4B
Pink
Brown
Ignition
4A
Brown
Alternator Ignition
2B
2A
Red
Red
Battery
ACC
4A
28
29
2D
BAT
2
Run the red 12V battery wire with the blue fusible link to
the battery stud on your alternator, this wire will then run
to the BAT stud on your starter. Use the protective boot
included over the stud on your alternator. If you are using
a one wire alternator this is the only wire you will connect
to your alternator.
Run the brown alternator ignition [4A] wire to its mating
terminal on the ignition switch branch of the main
harness. Plug the connector pre-installed on this wire into
the terminal on your alternator. For a one wire alternator
you will not use this plug.
2A
Horn
Relay
Connector
1
Run the red wire attached to the plug in connector for your
alternator to the battery stud on your alternator. Route the
wire through the protective boot over the stud. For a one
wire alternator you will not use this wire.
Run the red 12V battery wire with the brown fusible link
from your starter BAT stud to its mating wire located in
the Power and Brake connection branch. You will need to
install appropriate connectors to the end once this is cut
to the correct length.
12V battery
© September 2013, Speedway Motors, Inc.
5
910-64027_10/16/14
Ignition Switch, Signals, Radio and Heater
INSTRUCTIONS
20 Circuit Wiring Kit
Instructions
910-64027
Ignition Switch Lead Wires
D
VB
12
n Feed
Ignitio
E
Alte
F
27
16
n
Bat
Radio
18
Hea
d
ter/A
CB Radio
C fe
4A
101
43
100
ed
G
ro
19
17A
4B
or Ig
ck
Clo
un
K
N
rnat
Main Wiring Bundle
28
H
G
If you are using a later 1975 and on column we have
included a connector to convert over to the required style.
The columns use the same pin out locations making the
swap easy; please follow the wiring table below to install the
adapter plug on a column.
15B
P
This kit was designed to function with a factory GM style
switch and column plug. It plugs into the 3-7/8” plug found
on GM columns from 1969-1974. It is found on a majority
of after market columns including Speedway’s Tilt Columns
such as p/n 910-32972
15A
L
14B
3B
Ignition Sw Accy
J
14A
M
TURN SIGNAL SWITCH
CONNECTIONS
2B
ry
atte
Turn Signal Switch Connector
50
150
Radio
Lead
Wires
Heater/AC
Feed
RADIO AND HEATER
CONNECTIONS
Run the brown heater/ac wire [50] to a heater/ac control
unit. Follow instructions provided by manufacture for proper
connection.
Run the red CB radio wire [100] to a cb radio or any sort of
accessory that requires a fused ignition power source.
Run the tan radio wire [43] to the radio main power. Follow
instructions provided from radio manufacture for proper
connections.
WIRE #
CONNECTION
COLOR
PRINTING
FUNCTION
28
G
Black
Horn Relay Ground
Horn button ground to the horn relay trigger
14A & B
H
LIght Blue
Left Front Turn
Feeds the left front turn lamp bulb high filament and the right turn dash indicator lamp
15 A & B
J
Dark Blue
Right Front Turn
Feeds the right front turn lamp bulb high filament and the right turn dash indicator lamp
27
K
Brown
Turn Sw-Hazard
4 way hazard power feed wire from the Hazard flasher “L” terminal
16
L
Purple
Turn Switch Feed
Turn signal power feed wire from the Turn signal flasher “L” terminal
18
M
Yellow
Left Rear Turn
Feeds the left rear turn and brake lamp bulb high filament
19
N
Dark Green
Right Rear Turn
Feeds the right rear turn and brake lamp bulb high filament
17A
P
White
Brake Switch
Power feed wire from the output side of the brake switch
Run the yellow clock-bat wire [101] to a clock or battery
feed for the radio. Follow instructions provided by radio
manufacture for proper connection.
© September 2013, Speedway Motors, Inc.
6
910-64027_10/16/14
INSTRUCTIONS
Ground
[during crank only]
Spare Ignition
Ignition Switch Connection Kit
GM Column Mount
910-64027-3
DIMMER SWITCH
Accessory
Battery
COLUMN MOUNTED IGNITION SWITCH
[GM STYLE]
7
5
910-64027_9/16/13
Headlight Switch
910-64027-1
Dimmer Switch
910-64027-2
INSTRUCTIONS
6
© September 2013, Speedway Motors, Inc.
1
3
Speedway Motors Inc.,
P.O. Box 81906 Lincoln, NE 68501
402-323-3200
www.SpeedwayMotors.com
2
HEADLIGHT SWITCH
HEADLIGHT SWITCH CONNECTOR
CONNECTION WIRE #
This switch must be grounded for the
dome light to function.
1
2
To install the control knob push it directly
into the front of the switch till you hear it
click into place.
To remove the control knob, pull the knob
to the furthest out position and press the
button on top of the switch to pull the rest
of the way out.
© September 2013, Speedway Motors, Inc.
910-64027_9/16/13
156
COLOR
White
9A
Brown
3
8
Gray
4
2C
Red
5
6
7
8
Optional
9B
10
40
Brown
Yellow
Orange
Brown
PRINTING
Dome Light Ground
Alternate full-time front parking lamp
(parking lights stay on with headlights)
Dash Panel Lights
Battery Feed
Rear Tail Lamp
Headlight Dinner
Fused Battery Feed
Front Parking Lamp
(parking lights off with headlights are on)
Speedway Motors Inc.,
P.O. Box 81906 Lincoln, NE 68501
402-323-3200
www.SpeedwayMotors.com
DISCLAIMER In an effort to offer our customers the low prices, quick
service and great value, Speedway Motors reserves the right to change
suppliers, specifications, colors, prices, materials. Each of the previous items
is subject to change without notice. Speedway is not responsible for any
typographical errors or misinterpretations. Quantities are limited on some
items.
WARRANTY DISCLAIMER The purchaser understands and recognizes
that racing parts, specialized street rod equipment, and all parts and services
sold by Speedway Motors, Inc. are exposed to many and varied conditions
due to the manner in which they are installed7 and used. Speedway Motors,
Inc. makes no warranties, either express or implied, including any warranty
of merchantability or fitness for a particular purpose other than those
contained in its current catalog with respect to the goods identified on the
face of the invoice. There is no warranty expressed or implied as to whether
the goods sold hereby will protect purchaser or ultimate user of such goods
from injury or death. Speedway Motors assumes no liability after this period.
DAMAGE CLAIMS Always inspect your package upon delivery. Inspect
all packages in the presence of the delivery driver. The driver must note
any damage. Ask the driver the Carrier’s procedures for handling damage
claims. You must hold the original box, packing material and damaged
merchandise for inspection or the carrier will not honor the claim. Notify
Speedway Motors customer service department for instructions on returning
damaged goods. Speedway is not responsible if no notification is given
within 5 days of receipt.
SHORTAGES Always check the contents of your delivery to insure all the
parts that you ordered were received. Please read the invoice. Double
check all packing materials, small items may be wrapped inside with these
products. Shortages may occur from damage to the box, so save all packing
materials. Inspect the box for holes that would allow parts to fall out. If you
are missing any item[s] be sure to check your invoice for back orders or
canceled items before calling the customer service department. If Speedway
has to split a shipment 7into multiple boxes, packages may be delivered on
different days. You need to contact the customer service department within
5 days of delivery to assure the prompt replacement. Speedway Motors
assumes no liability after this period.
REFUSALS All refused COD customers will be billed a 15% restocking
charge plus freight to and from the destination! If you have questions please
contact Speedway’s customer service department.
Headlight high beam
Speedway Motors Inc.,
P.O. Box 81906 Lincoln, NE 68501
402-323-3200
www.SpeedwayMotors.com
Headlight switch
The top wire will run to your headlight switch
[yellow wire #10]
Once the wires are installed in their appropriate cavity, the white plug
will be plugged into the switch first using the black connector to secure
it in place. Even if there are no wires in the black pigtail plug in the
connector to retain the white one.
8
The bottom right wires will run your high beam
control circuit [green wires #11A and 11B]
Ignition
Headlight low beam
Starter
Use supplied harness plugs and the appropriate wiring diagram for
your switch to determine which wires will go where. GM used multiple
style switches with different wiring pin outs; please verify which style
you need. Our cavity diagram is a generic one that is common for most
GM vehicles.
The left bottom wire will run to your low beam
control circuit [tan wire #12]
IMPORTANT
GENERAL PURPOSE FUNCTIONS
4
Dimmer Switch
910-64027-2
Headlight Switch
910-64027-1
© September 2013, Speedway Motors, Inc.
910-64027_9/16/13
WARRANTY CLAIMS If an item has a manufacturer’s warranty as being
free from defects we will exchange only. If the item has been used and
you are requesting warranty work, this may take up to 30 days as warranty
work is done by the manufacturer NOT Speedway Motors. If you have any
questions please contact customer service.
RETURNS Speedway wants you to be satisfied with your purchase. If
within 30 days after you receive your shipment you are not satisfied, you
may return the item for refund or exchange. All exchanged or returned
merchandise must be in original factory condition7 with no modifications
or alterations. Returned merchandise must include all packaging materials,
warranty cards, manuals, and accessories. If the items being returned need
to be repackaged there will be a re-packing charge. Re-pack the item in a
sturdy7 box and include a copy of your invoice and complete the form on
the back of the invoice. You must ship orders back PRE-PAID. WE DO
NOT ACCEPT COD SHIPMENTS. All exchanges need to have reshipping
charges included. Items that are returned after 30 days are subject to 15%
restocking charges. All fiberglass returned will have 15% restocking charge.
No returns on electrical parts, video tapes, and books. Absolutely no returns
on special order or close out merchandise.
FREE CATALOGS Speedway Motors offers FREE catalogs for Race,
Street, Sprint and Midget, Sport Compact and Pedal Car restoration.
**Some items are not legal for sale or use in California on pollution controlled
motor vehicles. These items are legal in California for racing vehicles only
which may never be used upon a highway.
Speedway Motors Inc.,
P.O. Box 81906 Lincoln, NE 68501
402-323-3200
www.SpeedwayMotors.com
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