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:

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)

Table 1

Head Lights

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

Fig. 3

Table 2

Turn Signals

Two female bullet connectors (See Fig. 2)

Table 3

Side Panel Park Light

1 female bullet connector(See Fig. 2)

Alternator

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

Fig. 4-4A Alternator Wiring

Table 4

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

Table 5

VSV (Vacuum Switched Valve) Connector

2 pin female plug (See Fig. 2)

Table 6

Brake Failure Warning Connector

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

Table 7

Regulator

3 screw terminals

Fig. 5

Table 8

Head Light Dimmer Switch

3 screw terminals

Fig. 6

Table 9

Windshield Washer Pump Motor

Two Female Spade Connectors

Fig. 7

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)

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

Table 12

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

Fig. 9

Firewall

Wiring Connectors

You can take the terminals out of the connectors easily. All you need is a small thin screwdriver or knife blade. See Fig. 10, you will see a male terminal I removed from a connector under the hood that the wire had broken off of. The line points to a tiny raised flap of metal that has to be pressed down with a screwdriver or something small enough to get in there. Then the terminal will slide out the back of the connector. This also works for the female version of the terminal. If you are patient you can coax the crimps apart with dental tools or something similiar to remove the old wire. Then clean it up and re-crimp your newly stripped wire to it. You can NOT solder this as it's made from brass! I have never found a source for these terminals.

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