[hill461]

Ok guys im needing some help . Im helping a friend change a steering column in a 64 gto . He has bought an ididit column needless to say the wireing plug is different . I have found online where the wires go on it but not the original steering. Olumn . Can someone tell me where the 7 wires on the orivinal plug goes to .

Black
Purple
Black with blue stripe
Black withwhite stripe
Blue
Black with yellow stripe
Green
Thanks john hill

[Bill Hanlon]

I know this doesn't answer your question (I'm looking for a 64 GTO wiring diagram), but ...

1 wire comes from the horn relay
1 wire comes from the turn signal flasher
1 wire comes from the brake light switch
1 wire goes to the left front turn signal
1 wire goes to the right front turn signal
1 wire goes to the left rear turn signal/brake light
1 wire goes to the right rear turn signal/brake light

[hill461]

Yes that much i know but i need to know what each color goes to because the guy wants me to splice the old plug onto the now column . If you have them in order like i listed the wire colors thats what i need to know

[Bill Hanlon]

Found a 2 page wiring diagram for a 64 Tempest here:
https://www.oldcarmanualproject.com/...re5765-340.jpg
https://www.oldcarmanualproject.com/...re5765-341.jpg
There does not seem to be a separate GTO diagram.

It shows an 8 pin connector as seen attached.

Dark Green goes to a rear stop/turn signal lamp. The diagram does not say which side, but I'm guessing left side.

Yellow goes to a rear stop/turn signal lamp. The diagram does not say which side, but I'm guessing right side.

One of the dark blue wires goes to a front turn signal. The diagram does not say which side, but I'm guessing left side.
The other dark blue wire goes to the dashboard turn signal indicator.

The natural wire comes from the stop light switch.

One of the light blue wires goes to a front turn signal. The diagram does not say which side, but I'm guessing right side.
The other light blue wire goes to the dashboard turn signal indicator.

The purple wire comes from the turn signal flasher.

The black wire comes from the horn relay.

The gray wire comes from the instrument panel lamp circuit to illuminate the automatic trans "what gear are you in" indicator on the steering column.

I ran across one error in the diagram where the Light Blue wire going to the right front turn signal suddenly became Light Black and then back to Light Blue. Most likely just a screw up by the guy that did the drawing.

[hill461]

Bill
The column that came out of the car is only a 7 wire plug with the wire colors i listed . They also match the plug under the dash
Thanks john

[Bill Hanlon]

Which of the 8 colors I listed is not on your 7 pin plug? I'm guessing it is the one for the gear indicator.

[hill461]

Bill
Only a couple . The wire colors are listed on my original post in order top to bottom
Thanks john

[tempest1964]

Here is a 1964 color wiring diagram I posted some time back:
https://forums.maxperformanceinc.com...ghlight=Wiring

[Bill Hanlon]

Exact same (including the mistake I listed above) diagrams I posted and someone colored part of the factory drawings. Colors do make it easier to follow the lines.

[tempest1964]

I think you nailed it when you said it was probably just a mistake by the draftsman. And yes, color makes it much easier to follow!

[johnta1]

Here's the link I posted in the other thread for the combined wiring diagram:


64 GTO Wiring