software for designing a wiring loom

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beamendsltd wrote:

> Perfectly - just not viable on volume production, in fact it's
> a sort of electromachanical version of a CAN bus!

Funnily enough, I bought an Atmel CANbus developement kit for about 40
quid a few months ago. Its just I can't get my head around the higher
level protocols - it doesn't seem right that each node doesn't have a
unique address. (well thats my understanding anyhow)

Steve
 
On Tue, 16 May 2006 21:02:56 +0100, Alex <[email protected]>
wrote:

>Well, if you have the electrical symbols stencils you've got a head
>start, although i still had to make some custom symbols. It does have
>the advantage that once you've connected everything up you can move
>things around and the wires move with it. I suppose you could use that
>feature to do a loom layout as well.


Any idea how i make a 4 pin relay with it? I can only seem to do ones
with 2 connections on.

 
On Tue, 16 May 2006 21:39:17 +0100, Tom Woods
<[email protected]> wrote:

>On Tue, 16 May 2006 21:02:56 +0100, Alex <[email protected]>
>wrote:
>
>>Well, if you have the electrical symbols stencils you've got a head
>>start, although i still had to make some custom symbols. It does have
>>the advantage that once you've connected everything up you can move
>>things around and the wires move with it. I suppose you could use that
>>feature to do a loom layout as well.

>
>Any idea how i make a 4 pin relay with it? I can only seem to do ones
>with 2 connections on.


I draw relays the old-fashioned way, showing the contacts and the coil
as separate items, thus I combine a relay and a set of SPST/SPDT
contacts, and group them so they move as a set.

If you just want a square object with more than two connections, open
the symbol and edit it.

Alex
 
Steve Taylor wrote:

> There is nothing so nice as a properly wired loom with everything
> labelled from end, and identified with non-removable lettered and
> numbered coloured rings (in resistor colour code), it just looks RIGHT.
>
> None of this multicoloured mess....



Job lot of pink* wiring in the Ambi is it then? You can put all the
numbers on this time.

* One of my first jobs helping Steve, before we were even engaged, was
making wiring looms to Ferranti spec, hundreds of wires (or it felt like
it), all pink coated and all identified with push on numbers (VERY sore
fingers until we made a tool for the job.)

Lizzy
 

>
>The other thing you didn't mention is that to get it "right" you need to
>look up the list of what colour wire does what, and buy wires of all manner
>of pretty colours...
>
>either that or do it like the aircraft and have all the wires the same
>colour identified by those little numbers and letters... but the pretty
>colours route is good 'cos then you can take the colour scheme from the
>wiring diagram and replicate it.
>
>I can rememeber a few of 'em: lighting supply is white/blue, main beam is
>blue/white, dip beam blue/red for example. however, on the newer stuff, the
>blue/red only goes as far as the fusebox then it splits into 2 colours for
>LH and RH dip.
>


The old Lucas/British wiring color scheme was quite logical, up to a
point. Modern cars tend to be a nightmare, with different
manufacturers using different colours for different things, or lots of
the same color for different things, or bastard ideas like one wire of
one colour that dissapears into the loom, with a hidden joint half-way
down and emerges as two completely different coloured wires at the
other end.

This is a pretty good guide to old British wiring colours, but it is
by no means the definitive - some of the colours are not what I've
found on old cars, but you have to start with something.

http://www.autoelectricsupplies.co.uk/file_uploads/Colour_code_for_vehicle_wiring_-_new_order_2.pdf

As for lots of wires of different colours, when I made my loom I
re-used old wire from half a dozen (modern) vehicle looms, thus
avoiding the need to go out and buy 100 different reels of cable. The
other alternative is to mark the colour codes using different coloured
cable ties - Maplins do a pot of 1000 little ties in 10 colours which
i make much use of when sorting out wiring on old vehicles where the
wires are all black with age and dirt

http://www.maplin.co.uk/Module.aspx?ModuleNo=19527&criteria=cable ties&doy=16m5

And only a fiver.

Alex
 
>
>This is a pretty good guide to old British wiring colours, but it is
>by no means the definitive - some of the colours are not what I've
>found on old cars, but you have to start with something.
>
>http://www.autoelectricsupplies.co.uk/file_uploads/Colour_code_for_vehicle_wiring_-_new_order_2.pdf
>


Forgot to mention, there is also a handy list of what those mysterious
number codes on relay terminals and things mean - Bosch Electrics
number codes

http://www.autoelectricsupplies.co.uk/file_uploads/bosch_terminal_designations.pdf

Alex
 
On Tue, 16 May 2006 22:16:02 +0100, Alex <[email protected]>
wrote:

>>
>>This is a pretty good guide to old British wiring colours, but it is
>>by no means the definitive - some of the colours are not what I've
>>found on old cars, but you have to start with something.
>>
>>http://www.autoelectricsupplies.co.uk/file_uploads/Colour_code_for_vehicle_wiring_-_new_order_2.pdf
>>


Thanks Alex!.

I've just scrapped an old saab and saved the loom so i can rob lots of
coloured wire out of it!

>Forgot to mention, there is also a handy list of what those mysterious
>number codes on relay terminals and things mean - Bosch Electrics
>number codes
>
>http://www.autoelectricsupplies.co.uk/file_uploads/bosch_terminal_designations.pdf


I spent hours searching for a list like that the other night!

 
Alex wrote:

> I draw relays the old-fashioned way, showing the contacts and the coil
> as separate items, thus I combine a relay and a set of SPST/SPDT
> contacts, and group them so they move as a set.


We have a drawing convention at work that relay COILS are designated
AA/n AB/n AC/n , where n is the number of contacts on the relay, then,
whereever you use the contacts in circuit, the contact is labelled AA1,
AA2..AAn, AB1,AB2,ABn etc.

This was taught to me by a guy brought up designing relay logic. Hi Dad.

Steve
 

>> There is nothing so nice as a properly wired loom with everything
>> labelled from end, and identified with non-removable lettered and
>> numbered coloured rings (in resistor colour code), it just looks RIGHT.

>
> * One of my first jobs helping Steve, before we were even engaged, was
> making wiring looms to Ferranti spec, hundreds of wires (or it felt like
> it), all pink coated and all identified with push on numbers (VERY sore
> fingers until we made a tool for the job.)


Hi,

Where can one get these numbers, preferably someone who will mail to South
Africa.

Greg


 
In message <[email protected]>
Steve Taylor <[email protected]> wrote:

> Austin Shackles wrote:
>
> > either that or do it like the aircraft and have all the wires the same
> > colour identified by those little numbers and letters... but the pretty
> > colours route is good 'cos then you can take the colour scheme from the
> > wiring diagram and replicate it.

>
> There is nothing so nice as a properly wired loom with everything
> labelled from end, and identified with non-removable lettered and
> numbered coloured rings (in resistor colour code), it just looks RIGHT.
>


And laced, not ty-wraped, all the cables parallel and neatly bundled..

> None of this multicoloured mess....
>
> Steve


Richard

--
www.beamends-lrspares.co.uk [email protected]
RISC-OS - Where have all the good guys gone?
Boycott the Yorkshire Dales - No Play, No Pay
 
beamendsltd wrote:
>
> And laced, not ty-wraped, all the cables parallel and neatly bundled..

Yes, yes.
And with all branches terminates at right angles to the bundles.
;-)
Steve
 
Greg_False wrote:
>>> There is nothing so nice as a properly wired loom with everything
>>> labelled from end, and identified with non-removable lettered and
>>> numbered coloured rings (in resistor colour code), it just looks RIGHT.

>> * One of my first jobs helping Steve, before we were even engaged, was
>> making wiring looms to Ferranti spec, hundreds of wires (or it felt like
>> it), all pink coated and all identified with push on numbers (VERY sore
>> fingers until we made a tool for the job.)

>
> Hi,
>
> Where can one get these numbers, preferably someone who will mail to South
> Africa.


RS Http://rswww.com sell them, but I think "Hellerman" is the manufacturer.

Steve
 
Steve wrote:
> beamendsltd wrote:
>
>>
>> And laced, not ty-wraped, all the cables parallel and neatly bundled..

>
> Yes, yes.
> And with all branches terminates at right angles to the bundles.


Oh look - a whole squadron of porcine aviators. :)

--
EMB
 
Steve wrote:

> beamendsltd wrote:
>>
>> And laced, not ty-wraped, all the cables parallel and neatly bundled..

> Yes, yes.
> And with all branches terminates at right angles to the bundles.


Just go the whole hog - a 101's big enough to get its own cable loft...

Mmmmm! Box Stitching.

P.
 
In message <[email protected]>
Steve <[email protected]> wrote:

> beamendsltd wrote:
> >
> > And laced, not ty-wraped, all the cables parallel and neatly bundled..

> Yes, yes.
> And with all branches terminates at right angles to the bundles.
> ;-)


and no "diagonals"... sounds like your a man after my own heart!

> Steve


Richard

--
www.beamends-lrspares.co.uk [email protected]
RISC-OS - Where have all the good guys gone?
Boycott the Yorkshire Dales - No Play, No Pay
 
LizzyTaylor wrote:
> Steve wrote:
>
>>
>> RS http://rswww.com sell them, but I think "Hellerman" is the
>> manufacturer.
>>
>>

> RS Stock no: 666-515
>
> Lizzy

There's them - the self sealing write on ones, and the ones we used
557-017 , 557-023 "HellaGrip" - to use lots of them, make a "thorn" with
a pointed end, and a hole in the back that the cable can be pushed into.
Set up the numbers on the thorn, and then slide them back onto the
cable. Because they are self coloured as well as numbered, they can't
get lost - like 101 ambi numbers do.

Steve
 
beamendsltd wrote:

> and no "diagonals"... sounds like your a man after my own heart!


When I was about 18 and knew it all, the way you do, I wired a job for
my father which worked beautifully, and he passed no further comment on
it (bastard) - and then it had to be passed by an MOD inspector.

I learnt a hell of a lot from that :-(( But I wired it a lot faster the
second time....

Steve
 

>>>
>>> RS http://rswww.com sell them, but I think "Hellerman" is the
>>> manufacturer.
>>>
>>>

>> RS Stock no: 666-515
>>

> There's them - the self sealing write on ones, and the ones we used
> 557-017 , 557-023 "HellaGrip" - to use lots of them, make a "thorn" with a
> pointed end, and a hole in the back that the cable can be pushed into. Set
> up the numbers on the thorn, and then slide them back onto the cable.
> Because they are self coloured as well as numbered, they can't get lost -
> like 101 ambi numbers do.



Thanks, what a mouth watering site.

Greg


 
Greg_False wrote:

>
> Thanks, what a mouth watering site.


Don't know if they supply SA directly, but I have an account, and could
ship it to you if you really want a set.

Steve
 
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