Lotus Elan

New S3 Wiring Loom - Please Help : )

PostPost by: Verve » Sat Jul 04, 2020 8:41 am

Hi All ,

As per my post in the "Electrical Forum" .... a very good old school friend of mine , has just acquired his Uncle`s S3 Elan , needing a new Wiring Loom ... but so far , the regular suppliers seem to be out of stock ...

Equally importantly , they only seem to be offering the early S1/S2 based loom ( + electric windows ) ... not what I think is the "later S3" superior version , as per the actual Lotus S3 Wiring Diagram printed in my Workshop Manuals ...

Does anybody have a later version ... or know where we can get one from ??

Many Thanks ,

Paul .
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PostPost by: HCA » Sat Jul 04, 2020 10:04 am

If you definitely cannot find one, how competent are you with autoelectrics? It is not difficult to make a loom - time consuming but not difficult.
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PostPost by: MarkDa » Sat Jul 04, 2020 10:46 am

I see Autosparks listing alternatives and customisation - perhaps they make to order
Certainly worth talking to them I expect.
Just how urgent is the need?

I have no affiliation and there are of course other manufacturers.
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PostPost by: Andy8421 » Sat Jul 04, 2020 12:17 pm

HCA wrote:If you definitely cannot find one, how competent are you with autoelectrics? It is not difficult to make a loom - time consuming but not difficult.

If you have the original to copy, it is very straightforward. There are a number of suppliers who can provide the correct cable, wrapping, connectors and tools. Just build it up one wire at a time, using the original loom for lengths and entry / exit points. Its more of a mission if you don't have the original, but I have done it a couple of times from scratch with good results.
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PostPost by: Craven » Sat Jul 04, 2020 1:09 pm

If truly a superior loom is required the suggestion of a bespoke version homemade or otherwise many improvements and additions could be made especially with regard safety.
Lotus use the absolute minimum number of fuses, many have included extra some going way over the top placing a fuse in almost every wire, but extra fusing is a high priority.
When I re-made the window feed cables I uprated them ( speed of operation ) by using the now available ‘ thin wall ‘ insulation type hence maintaining the need to pass through the door check tube.
Certainly the later S3 electrics using relays for the Head/Dip function is a must, personally I would leave out the flashing headlight complication.
FWIW
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PostPost by: Verve » Sun Jul 05, 2020 7:07 am

Hi Guys ,

Thanks for the tips & advice ... apparently Autosparks have only just started working again ... & it will be September before they have any new "S3" looms ...

I`ve already advised my friend ( who`s a capable Retired Engineer ) to fit a subtle modern fuse box ( hidden or whatever ) , to submanage the circuits ... & that`s an interesting idea to use thin walled heavier cabling for better window operation ... : )

I think I will have a chat with Autosparks ( as they seem to be the main supplier to our Specialists ) ... mainly to see why they don`t do the loom as per The Lotus Workshop Manual ... it would be better & save an awful lot of confusion !

It would also be handy , if they put an extra return wire in to the Rev` Counter ( from the coil ) , as an option for those fitting electronic ignition ... any other good tips from anybody ?

If all else fails ( does anybody know of any other supplier doing the " Workshop Manual " S3 loom ? ) ... my friend would be capable of building a loom ( a Winters project ) ... but his own loom is butchered/modified beyond recognition , in reference terms ...

Thanks Again ,

Paul .
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PostPost by: MarkDa » Sun Jul 05, 2020 10:27 am

I expect Autosparks will put anything you ask for in a loom - at a price of course!
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PostPost by: Donels » Tue Jul 07, 2020 6:04 pm

You could try Paul Shipley at PJS Sportscars. He restores Elans and usually has a good stock of new parts, including looms.
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