76 shop manuals??

[DUK]

I haven't been able to find a 76 shop manual or wiring diagram and was wondering where to purchase or find these? BTW Thanx Wayne and crew for all you guys do, you don't get a tenth of the credit owed to you. Thanx,Duke

[Jim Sims]

I believe the factory shop manuals covering 1976 are currently NLA (perhaps they'll be printed again someday). Sometimes there are used ones for sale on Ebay. There is a usable wiring diagram for 1976 (although a magnifying glass is sometimes needed ) in the 911 Haynes shop manual. The small Porsche technical specification book for 1976 is also still available. I have a 1976 911S and if you need a part number I have the paper factory parts catalogs which are more complete for the mid-year cars (74-77) than the parts CD now being sold. The parts CD is a worthwhile investment though. Jim

[DUK]

Thanx, Jim I'll look into all of those.

[masraum]

The '72-'83 shop manuals are downloadable on the internet right now. There is a scan that is about 70MB and another that is, I believe 112MB. The larger scan is the better version. I don't mind advertising this since you can't currently purchase them from Pelican or Porsche. I have heard that Porsche is planning to release the manuals on CD/DVD at some point.

[MACHINEMON]

Would you share the link to the site for the download?

[Rich76_911s]

Dude Zink I am going to send you a PM.

[masraum]

It's not really a link. It's through a file sharing network like edonkey2000 or gnutella. Software like Shareaza will connect you to both. There was a Pelicanite who had shared the software on an ftp server who was willing to discretely hand out the username and password for others to download, but I don't know that I've seen him on the board, and that was probably over a year ago so I'm not sure if the software is still there or even where "there" is anymore.

[Lorenfb]

"It's through a file sharing network like edonkey2000 or gnutella."

That's called a coryright violation! It's not a wise idea to post those
types of links on Pelican which puts Pelican in a problematic situation.
Those manuals can be legally purchased thru some Porsche dealers as
advertised in "Excellence".

[masraum]

It's my understanding that those manuals are currently NLA, so I don't think they can be purchased from a dealer unless said dealer just happens to have some sitting on a shelf, but I could definitely be wrong.

[Lorenfb]

Bought a set two weeks ago. Pelican could probably order a set for you if asked.

[Grady Clay]

Duke,

Do you have a specific question? I’m looking at my original ’76 current flow diagram (color, large format, multi-pages).

Best,
Grady

[Rich76_911s]

IS there anywhere someone could go to learn how to read those things? THere is a brief overview that I read in one of waynes books about looking at it as a waterfall but I still don't get it.

[Jim Sims]

Do you have a specific question about a circuit or electrical component(s)? Answering said questions with reference to the circuit diagram is a good to teach/learn how to interpret the circuit diagrams. Jim

[Grady Clay]

Rich,

Conveniently I happen to have this in front of me.
The Porsche Workshop Manual says:

“How to read current flow diagrams.

“In previous wiring diagrams electrical components were
shown in the approximate position as you would find
them in the car. However, to show the electrical
connections between each component in the diagram
became more and more difficult as the number of
components increased. The result was that it was
hard to trace electrical circuits.

“To make wiring diagrams easier, we revised them
completely. The result of extensive studies is a new
diagram called ‘current flow diagram’.

“Current flow diagrams are laid out by placing circuits
of related components one next to the other. The
base of each circuit always starts with ground. The
location of components on the diagram is no longer
related to where the components would be in the car.
The layout of the circuits, however, is such that each
can be followed much easier to help troubleshooting
of electrical faults.

“Looking at a current flow diagram you will find a yellow
base line. The numbers in the yellow base line
characterize the current tracks in the diagram and
are to locate each component that is listed in the legend.

“The colored lines in the diagram represent the wires in
the car, the colors correspond with the actual colors of
the wires. The small numbers in the wiring runs indicate
the wiring gauge in mm². The thin black lines are not
actual wires but internal connections, such as ground
connections in a lamp housing. The base line for ground
is the thin black line directly on top of the yellow base line.

“Interrupted wires or connections end in a yellow square.
Continuation of this interrupted circuit can be found in
the current track using the numbers in the square.

“Each component in the diagrams identified with a letter,
sometimes with a letter and a number. Component
definition can be found in the legend.

“Most connectors or terminals are numbered. These
numbers correspond with the numbers that are right
next to most connectors on electrical components,
such as switches and relays. This numbering system
is used on most European cars. Listed below are the
most commonly used terminals and their location.”
(This is dated 1974.)

© Dr. Ing. h.c. F. Porsche A.G.

Here is a page of common electrical symbols from the diagrams.


© Dr. Ing. h.c. F. Porsche A.G.

The legends are reasonably clear where components and
connections are. It would be useful to have photo
documentation of the actual locations and reference
connections to the various wiring harnesses.

Best,
Grady

[Rich76_911s]

Grady,

I think that you must get the PP award for most complete and informative threads. I cannot thank you enough for all the information that you have shared. Hopefully I get to meet you some day at a Porsche event in Colorado and thank you face to face.

Rich

[Grady Clay]

Rich,
Thanks for the kind words.
Are you going to the DE at Second Creek this weekend?
I'm going to try and be there.

Best,
Grady

[DUK]

Grady, Thank you for the reply. (Hope to meet you some day). I'm going to attempt to completely rewire the car. I can't stand the mess it is in now, with splices and extra connections everywhere. Seems the POs were real hacks. Do you think it's possible? I just thought that running done some of the circuits and figuring out what all is needed would be easier with a diagram. I'm not the most literate electrical engineer but I can sure get myself into trouble. Usually though I know enough people to get me out.

Jim, also thanx for the reply. I have a few sources that seem to be able to come up with the diagram, but if I need some more I'l PM ya.

[Grady Clay]

Duke,

There are a few ways to go. Most will use the diagrams and solve the issues. That might require the repair or even replacement of some harnesses. The other extreme is you can order up all the complete wiring harnesses from Porsche. I’m pretty sure they custom build them and are not NOS (New Old Stock). It would be worthwhile to use PET to find the part numbers and get a price quote. (Be sitting down.)

An intermediate solution might be to find a donor salvage 911. YOU would want to remove the harness(es) yourself so you could better install and insure there was no damage from the removal. You should pay careful attention to having the same (compatible) harnesses.

Of course you can always make your own. I had a customer who drove his new '76 930 Turbo from Guatemala City to Denver. Somewhere in Mexico the wiring behind the dash shorted and caught fire. Someone re-wired all the damage and it ran perfectly. I wish I had a picture of the all-yellow-wire repair.

A “complete re-wire” is a BIG deal! The cost would total most cars.

Best,
Grady

[Rich76_911s]

If you need a new set I have the complete set out of a '76. I have no idea how much this stuff is worth. I have every end labeled but it would be greek unless you were putting my car back together. Some might help though. This is for the front trunk only though. The only wire that I cut was the one going up to the lights that work when you open the door. The go up threw the a-pillar (I think). The wiring running through the center tunnel is one of the few parts of the car that has been able to avoid my left turn only right arm that thing is in there good.