1971 Electrical Harness

Underhood Wiring

Someone on the CCOT bullentin board asked for help with identifying the wiring under the hood of his 1972 Cruiser. I pointed him to the wiring diagram that I had gotten from IH8Mud.com . This diagram was pretty rough when I first looked at it. I loaded it into Paint Shop Pro and 'fixed' it. This involved several hours of work on my part cleaning it up and re-labeling it. Here is the result:

From IH8Mud

From Factory Manual

Fig. 1

Various Early Wiring Diagrams I have Found

His wiring had been badly hacked up and he didn't know what connectors went to what. I took a bunch of photographs and supplied him with a list of all the connectors under the hood and their purpose. Here is that information for everyone to have and share.

Drivers Side Wiring

Fig. 2

Drivers Side Harness

Horn

Single Female spade connector (See Fig. 2)

Terminal Description

Wire Color

Function

Female Spade

Green/White

+12V for Horn

Horn Relay on passenger fender through harness

Table 1

Head Lights

3 Pin triangle shaped plug.(See Fig. 3 )

Fig. 3

Terminal	Color	Function	Destination
Male pin	White/Black	Ground	Ground
Left Female Pin	Red/Yellow	High Beam	Dimmer Switch
Right Female Pin	Red/Green	Low Beam	Dimmer Switch

Table 2

Turn Signals

Two female bullet connectors (See Fig. 2)

Terminal	Color	Function	Destination
Female Bullet 1	Green/Orange	Turn Signal Bulb
Female Bullet 2	Red/White	Park light bulb

Table 3

Side Panel Park Light

1 female bullet connector(See Fig. 2)

Terminal	Color	Function	Destination
Female Bullet 1	Red/White	Park Lamp

Alternator

Alternator wiring connector(See Fig. 4-4A)

Fig. 4-4A Alternator Wiring (Note the ADAPTER!!!) You OEM will probably NOT have this adapter!!!

Terminal	Color	Regulator connection
E Terminal	White/Black	Goes to Regulator E terminal (One on left by itself)
F Terminal	White/Green	Goes to Regulator F terminal (Bottom one on right)
N Terminal	No connection
Bat terminal	White/Blue	Large 8 ga wire goes to amp gauge then to battery, fuse box, and ignition switch

Table 4 (OEM Wiring)

The adaptor thing shown in Fig. 4and 4A is wired as follows

From Harness	Green plug	Connecting Wire	White Plug to Alternator	Alternator
White/Black	Left terminal	Black	Top terminal	F terminal
White/Green	Top terminal	White/Black	Left terminal	E terminal
No Connection	Right terminal	Yellow	Right terminal	N

Table 5 (Adapter Wiring)

VSV (Vacuum Switched Valve) Connector

2 pin female plug (See Fig. 2)

Terminal	Color	Function	Destination
Top connector	White/Black	Ground	Ground
Bottom Connector	Yellow/Red	+12V from computer	To Emission Computer

Table 6

Brake Failure Warning Connector

Two Slide on Connectors in Series(See Fig. 2)

Terminal	Color	Function	Destination
Slide on connectors	White/Green	Brake Pressure Switch	Brake Test Switch

Table 7

Regulator

3 screw terminals

Fig. 5

Terminal	Color	Function	Destination
Left terminal	Two White/Black wires	Ground	One to alternator E Terminal
Right Bottom Terminal	White/Green		Alternator F terminal
Top Bottom Terminal	White/Red	+12V	Switched Ignition Fuse

Table 8

Head Light Dimmer Switch

3 screw terminals

Fig. 6

Terminal	Color	Function	Destination
B: Bottom terminal	Red/White	+12V	Headlight Switch terminal H
1:Top Left terminal	Red/Green	Low Beam	Headlight Low Beam
2: Top Right terminal	Red/Yellow	High Beam	headlight High beam and to high beam indicator in dash

Table 9

Windshield Washer Pump Motor

Two Female Spade Connectors

Fig. 7

Terminal

Color

Function

Destination

Spade 1

L terminal on stock motor

Blue/Yellow

Washer Motor Ground

Ground

Spade 2

B terminal on stock motor

Blue

+ 12

20 Amp Fuse in Box

Table 10

Unknown Wires

Two Bullet Connectors

Blue/White = Unknown Located on firewall
Blue/White = Unknown Located on firewall

Reverse Light Switch (For 3 on the Tree Columns)

2 Female Bullet Connectors(See Fig. 7)

Terminal	Color	Function	Destination
Bullet 1	Red/Blue	To SPST Switch	To backup light
Bullet 2	Red/Blue	To SPST Switch	To 5A fuse in fuse box

Table 11

If you have the 3 speed with the floor shift kit you can make a jumper wire to connect these wires to the switch on the transmission to get the reverse light to work again. See Fig 7.

Passenger side Wiring

Fig. 8

Head Light same as Drivers side
Horn same as Drivers side
Turn Signal Same as Drivers side
Park Lamp same as Drivers Side

Horn Relay Connector

Three Terminal Plug all Female

Terminal	Color	Relay Terminal	Destination
Top terminal	Green/Red	S	Horn Button
Left Terminal	Green/Yellow	B	20 Amp Fuse
Right Terminal	Green/White	H	+12V To Horns

Table 12

Blower Connector
Flat 3 terminal 1 male 2 female pins (I don't have a blower on this Cruiser)

Fig. 9

Terminal	Color	Function	Destination
Male Pin	White/Black	Ground	Ground
Female Pin 1	Blue/Black	High Speed	To Heater Switch
Female Pin 2	Blue/White	Low Speed	To Heater Switch