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My collection has two different wiring diagrams:
an early one (publ. No. WD 1017/1L)
which was an insert to the Owner's Manual during the seventies,
and a very late one which was first supplied separately
(publ. J86/1005 of 1986),
and later incorporated in the Service Manual AKM9135
at its 4th revision in 1990.
Presenting a wiring diagram on a web site is not an easy task. It is a fairly large drawing, with very small print and with many parallel lines running very close to each other. Therefore we have chosen the following approach, which differentiates between viewing on line, and providing a printing option both for DIN-A4 and US-Letter paper sizes. |
Each of the two diagrams can be viewed as a whole in your browser, at a resolution of 1100×920 pixels approx. (landscape). This resolution will give you an overall impression, but will most probably be too coarse to see the fine details. Just for the sake of thought: the picture shown above has one quarter of the surface of what is underneath the following click points. The hi-res version (lower on this page) is the real troubleshooting help, but that won't be manageable on a small display.
The 1986/1990 diagram had separate drawings for the rear airco and for the cooling fan:
The keys to each of the diagrams are available as separate text pages, which can easily be printed by your browser.
Also, both large diagrams can be viewed at a high resolution
of (roughly) 2250×1700 pixels.
Apart from the large download time, this will either lead to very large
scroll bars on your screen, or to an automatic scaling to your screen sizes,
giving the same effect as the previous possibility.
Do not try this unless you have a large, high resolution display.
My suggestion is that you start with a low resolution choice (above),
and only step to the high resolution if you run into difficulties
with the details that you want to see.
Both diagrams have been turned to portrait orientation, brought to the exact aspect ratio of the paper size (choice of DIN-A4 and US-Letter), and then cut into four pieces with a 15% overlap (approx.) each. The four pieces are named NE, NW, SE and SW, and they are typically between 75kB and 115kB each.
Printing these diagrams with your browser's print facility may require that you modify the printer-setup menu of your browser first. It is important that the image-area on your paper has the same aspect ratio as the paper size itself. As an example: my Mozilla browser takes, by default, margins of 0.5 inch (= 12.7 mm) on each side of the paper. So instead of the aspect ratio of the standard A4-size (297÷210=1.41) it gives me ((297-2×12.7)÷(210-2×12.7))=1.47 which is a 6% difference. This makes circles to ellipses, and I had to disable the margins explicitly! If your browser adds header or footer information to each print, this makes the distortion even worse. Note that there are many perfect circles in the drawing, and if they do not come out as such, you must modify your browser's printer setup (or live with the ellipses)! If you have to tell your browser to shrink the image to fit on the page, then (as the above calculations explain) make sure that the shrinking is done equally in both dimensions. If your browser allows you to experiment with a shrinking scale factor, it is better to start low (e.g. at 30% or 40%) and then experiment your way up, instead of starting at 100% and then stepping down. But: if you don't mind that circles become ellipses, then don't care!
Also: be patient. There is a lot of calculation involved in rendering these drawings to a printable image. One or two minutes of calculation time, dependent on the type of printer you have, is not exceptional. Tell your browser that this is not a colour print, but B&W (or grey scale); it will speed up substantially.
Hint: if you photocopy the sheets before pasting them together, you can colour mark the connections that are of interest to you, and still have a fresh set of prints for future use.
The two small 1986/1990 diagrams (airco and cooling fan) are not provided as separate print files. They should easily print from their original drawings. The same is true for the key listings.
page.