Rob55
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| posted on 15/8/12 at 08:44 AM |
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Loom..how hard?
Hi all
I'm building a 929 blade engined Westfield. I have the full wiring loom out of the bike along with the ECU, HISS, rectifier, tilt sensor etc.
I plan to have a loom for the engine only and a separate loom for all the other electronics such as lights etc.
I have 2 options - either buy the Westfield loom and modify it or build a custom loom from scratch. I like the idea of building a custom loom for 2
reasons - I will know my way around it and there will be no dead wires. But, I am worried it would be a bit of a headache to get right, it's
not something I have tackled before and it would be a bit of a learning curve for me.
Has anyone else done it before that could offer their advice? Or is it really a job for a spark?
Rob
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loggyboy
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| posted on 15/8/12 at 08:46 AM |
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No reason why you cant know your way around a pre bult loom, as it still will need installing and connecting etc.
If you do start from scratch it will be expensive due to wanting alot of lengths of different colour cable and probably wont save you huge amount on a
pre made one.
How much is the W/field one, and how 'made' is it?
Mistral Motorsport
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sdh2903
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| posted on 15/8/12 at 08:54 AM |
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I was in the exact same situation, Bec engine loom and separate car loom. I ended up buying a universal loom. I wish I had made my own. I ended up
stripping the loom to bits and removing half of it as i didnt require it. It would have been easier/less time consuming and probably a bit neater to
make my own.
If you want it locost get a full car loom from a scrappy and use the wires from that. There is a pretty good guide kicking around in the electrics
section somewhere.
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Rob55
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| posted on 15/8/12 at 08:56 AM |
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quote:
Originally posted by loggyboy
No reason why you cant know your way around a pre bult loom, as it still will need installing and connecting etc.
If you do start from scratch it will be expensive due to wanting alot of lengths of different colour cable and probably wont save you huge amount on a
pre made one.
How much is the W/field one, and how 'made' is it?
Westy one is pretty much fully made BUT not for my engine (it's for the older carb engine, mine is FI), and as far as I know they have it all as
one rather than 2 separate looms. It also means if I deviate from the standard setup regarding lights, instruments etc, it will need further hacking
to make it work. Cost is £240!
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sdh2903
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| posted on 15/8/12 at 08:59 AM |
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Here it is:
http://www.locostbuilders.co.uk/forum/5/viewthread.php?tid=169470
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Rob55
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| posted on 15/8/12 at 09:02 AM |
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quote:
Originally posted by sdh2903
Here it is:
http://www.locostbuilders.co.uk/forum/5/viewthread.php?tid=169470
Great, some bed time reading lol, thanks! 
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Daddylonglegs
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| posted on 15/8/12 at 09:30 AM |
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I umm'd and r'd for ages then decided to build my own loom. I designed the circuit diagram based on lots of input from threads on here and
elsewhere, then set to making the loom. At first it seemed daunting, but as long as you treat each part seperately and check the operation as you go
along it is not too bad.
Just be methodical, check each circuit before adding the next etc. And above all, BE PATIENT! If it all gets too much, walk away have a drink (of
whatever takes your fancy) then return later with a fresh mind.
As you said, building your own does give you an intimate knowledge of the wiring which is a god send when something needs attention.
With regards to the cost, there are plenty of places that sell wire by custom length, and to be honest you do not need as much as you'd
think.
HTH
JB
It looks like the Midget is winning at the moment......
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twybrow
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| posted on 15/8/12 at 11:02 AM |
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another thread on the subject from a few weeks back...
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chrsgrain
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| posted on 15/8/12 at 11:30 AM |
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Not hard at all, I bought one for my first build, and wished I hadn't, needed lots of work. For this build (a TR4a restoration) I've made
a loom myself, complete with proper electronic ignition, halogen lights etc. Not difficult, just have to be careful.
Get a decent set of wire cutters and crimpers, work out what wire you need in advance and order it from someone like vehicle wiring products
http://www.vehicle-wiring-products.eu/VWP-onlinestore/home/homepage.php
Enjoy!
Chris
Spoing! - the sound of an irony meter breaking...
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Mr Whippy
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| posted on 15/8/12 at 11:31 AM |
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do use self amalgamating tape rather than insulation tape as it will be a lot more flexible, cleaner and waterproof, reusable tie wraps can be used to
hold it together till it’s ready to be covered
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Davey D
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| posted on 15/8/12 at 11:52 AM |
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i used 2 looms in my car. The standard bike loom from the R1, but i stripped out everything from it that i didnt need, like the lights, and fans etc.
i then used a separate loom for all of my lighting, and everything else.
i think this is a better idea, as if you ever decide to change your engine in the future for something different , then it will be very easy to remove
the bike loom leaving all the lighting in place
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Daddylonglegs
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| posted on 15/8/12 at 12:50 PM |
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Forgot to add, my advice is to make a circuit diagram. 12 months from now if you have any electrical issues you'll wish you had 
It looks like the Midget is winning at the moment......
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