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Re: My '72 911T
Posted: Fri Nov 26, 2021 6:22 pm
by Gary71
Thanks Andy, So I guess my ‘Not sure if this is connected to anything’ is right!
I’ll leave it off and see if any smoke escapes from the other wires.
Re: My '72 911T
Posted: Fri Nov 26, 2021 6:56 pm
by RobFrost
Yes, one brown and white also clearly shown on the diagram not connected, terminating just outside the steering column. The other end goes to an unused pin on a 6 pin plug.
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Re: My '72 911T
Posted: Fri Nov 26, 2021 6:57 pm
by SeanP
Sure its a 72 wiring loom?
Do you have intermittent setting on the wipers?
Looking at the wiring diagram SL35 if its not the horn then its got to me the signal to the interval switch
Or
If the other end comes from the ignition switch its the buzzer for the doors etc
Re: My '72 911T
Posted: Fri Nov 26, 2021 7:19 pm
by RobFrost
Fwiw on earlier cars the diagram shows the horn wasn't grounded at the switch. Positive voltage came in via brown and if the horn switch was closed it left via the brown and white (82 and 82a) to the relay. So it's a remnant of the inferior arrangement on earlier cars. Mystery solved - possibly!?
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Re: My '72 911T
Posted: Sat Nov 27, 2021 6:00 pm
by Gary71
More progress on the wiring today. Slow work, but so glad I labelled everything and took lots of pics! Again I’m leaving the labels on for now.
Fitted a new speedo cable at this point as well. I’d managed to twist the old one when I dropped the engine once and forget to disconnect it! Ever since the needle has wobbled at low speed as the cable winds itself up and releases.
So good to get that iconic dash layout back in, with that one little addition of a fresh air vent. I’ll block the chrome out on that once I’ve checked it works.

Re: My '72 911T
Posted: Sat Nov 27, 2021 6:27 pm
by Lightweight_911
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The best part of a restoration - working in clean conditions refitting new/refurbished components ...
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My '72 911T
Posted: Sat Nov 27, 2021 6:41 pm
by Gary71
The clean is so nice, and the fact that the jobs no longer involve an angle grinder…
The instruments have gone straight back in, no refurb. They are a bit pitted, but I quite like it.
Re: My '72 911T
Posted: Mon Nov 29, 2021 6:03 pm
by Gary71
Little jobs with no visible progress
Heated screen wiring and relay done, and then onto the interior lighting loom.
Fun to get that down inside the A Pillar, eventually sorted it with a fairly stiff draw wire from the roof down to the underbonnet.
Then did the other door switch, tomorrow night I’m thinking I might build up a door.
Exciting times

Re: My '72 911T
Posted: Mon Nov 29, 2021 7:47 pm
by anglophone1
Heated front screen- one of the best things I have done to Jaffa 911.
Re: My '72 911T
Posted: Mon Nov 29, 2021 7:57 pm
by Gary71
anglophone1 wrote:Heated front screen- one of the best things I have done to Jaffa 911.
Absolutely, I’ve had one for years but unfortunately cracked it taking it out.
Re: My '72 911T
Posted: Mon Nov 29, 2021 8:12 pm
by markm
Heated front screen, like it. Didnt even think you could put one in a old porker
Re: My '72 911T
Posted: Mon Nov 29, 2021 8:17 pm
by Gary71
Re: My '72 911T
Posted: Mon Nov 29, 2021 9:07 pm
by Bootsy
You're making great progress Gary - looking superb
Re: My '72 911T
Posted: Tue Nov 30, 2021 9:37 am
by sladey
Excellent stuff Gary. Make sure you enjoy every second
Re: My '72 911T
Posted: Tue Nov 30, 2021 9:38 am
by sladey
Excellent stuff Gary. Make sure you enjoy every second