My first thought, also mentioned by others, was telcom cable... however
telcom cable is (mostly) identified by pair-combinations. So, unless you
are running most of your signals as pairs, you might not get as many
individual colors as you might want:
http://www.generalcable.com/NR/rdonlyres/74C9F7DB-689B-4FDB-973D-017A9FB31256/0/3031_Color_Code_Cht.pdf
http://en.wikipedia.org/wiki/25-pair_color_code

However:
Industrial or signalling cables for non-paired applications might be a
better bet for you, although the colors are less standardized. Here are a
couple of manufacture's color codes for large wire-count cables:
http://www.belden.com/docs/upload/No-2-and-2R-ICEA.pdf
http://www.multicable.com/Content/Multi_Cable_Multiconductor_Color_Chart.asp

If you only need 2 feet to get the job done, you may be able to request a
2-ft sample of one of these from the manufacturer's rep, which would give
you your desired 40 or 50 wire colors. You may be able to find some short
lengths online of this type of cabling, as well.

If you are still looking, let me know and I can search through my scraps at
the shop and see how many colors I can come up with for you... 2 feet you
say?

Also, just if anyone was curious, when you buy full spools of wire from a
manufacturer, you can specify striping colors for an additional fee getting
you any number of unique wire color combinations needed for your builds.

Regards,
Doug

On Sun, Jan 25, 2015 at 7:20 PM, Erik Lane <[email protected]> wrote:

> At least in older cars, a problem like that wouldn't be shorts in the
> wiring - it would usually be corrosion/wear on the contact points inside
> the window switch. I don't know if that still holds for a car that new - do
> they computer control everything? But it's the very first place I would
> ever look.
>
> On Sun, Jan 25, 2015 at 3:13 PM, Dawes, Andrew M. <[email protected]>
> wrote:
>
>>  I was just chasing down shorts in my van door wiring (window rolls down
>> but not up?!). You could cut out part of an automotive wiring harness at a
>> junkyard and probably get at least 40 colors :-)
>>
>>  My van is 2010 (just out of warranty, yay) so I'm sure anything new-ish
>> with power doors/windows/mirrors etc, is going to be loaded with wires.
>>
>>  -Andy
>>
>>   On Jan 25, 2015, at 10:46 AM, Ward Cunningham <[email protected]> wrote:
>>
>> My mind flashes back to my youth.
>>
>> I remember my father driving my older brother up to Chicago to pick up
>> supplies at Allied Electronics, the premiere industrial sales outfit at the
>> time. I tagged along. What I most remember is how unusually long it took to
>> fill the order because my brother had tacked on one foot of 54-conductor
>> cable. Strange that I remember the exact number of conductors. It was a
>> large part of the conversation on the hour long drive back home.
>>
>> I notice ebay has some of this very cable available. 500 feet, ten
>> dollars a foot.
>>
>> http://www.ebay.com/itm/500ft-Belden-8773-CABLE-27-Pairs-54-conductor-22AWG-POLYPROPYLENE-AUDIO-computer-/131136514919
>>
>>
>> On Jan 25, 2015, at 10:07 AM, Mykle Hansen <[email protected]> wrote:
>>
>> Hi all,
>>
>> My midi foot pedal project has morphed a bit, and now I'm trying
>> to hook up all the front panel controls of my old dead Marantz amplifier
>> to a Teensy++, to turn it into a general-purpose MIDI control surface
>> including a footswitch jack.  It may be the largest Teensy enclosure
>> ever built!
>>
>> I've been holding off on the wiring stuff because I thought it'd be nice
>> to use color-coded wiring for all the connections.  But I've been
>> stumped as to where I can find, say, 40 different wire colorations
>> in a length of 2 feet or so.  I figured I could just chop
>> off a length of some old telco trunk or parallel data cable, but I
>> haven't been able to scrounge one yet.
>>
>> What do you all do for color-coded wiring in complex builds?  I can
>> usually scavenge up to ten solid colors out of whatever old dead bits of
>> electronics are lying around, but for more colors than that I need
>> the multi-color coded stuff (red with white stripe, etc) and I don't
>> have a good source for that.  (I did get the 8 color/patterns that
>> come in Cat5, plus the solid colors I have ... still not quite enough.)
>>
>> -m-
>> _______________________________________________
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>>
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>>
>>  --
>>  Andrew M.C. Dawes
>> Associate Professor of Physics
>> Pacific University
>> amcdawes.com
>>
>>
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