I have a theory. Ahem.
You will get fed up with waiting, and as soon as your braiding machine is working to your satisfaction, you will simply set out all the electrical components in their logical position and wire your own loom from scratch, it will look authentic and perform faultlessly.
Within three weeks someone on ebay will suddenly list a new old stock Chief loom. You will buy this and find yours is identical apart from the section to the stop/tail lamp, the original being 1/2" shorter...
There is a sort of precedent for this, on a slightly bigger scale. When steam locomotive preservation in the UK wasn't so technically advanced as it is now, a group of enthusiasts decided to go for mission impossible and buy and restore a three cylinder express passenger locomotive from the scrapyard. This was 71000 Duke of Gloucester, the first in what would have been a whole class of locomotives, but with the end of steam traction already in sight in the 1950s British Railways only built the one example. Rather small by American standards, but hey...
By the time it reached the scrapyard (after a rather short service life) both the outside cylinders had been removed. One had simply been sent for scrap and was long gone, the other still existed but had been cut in half and put on display in the Science Museum in London. This meant a new set of cylinders had to be cast as there were no spares (ever!), and with the unusual Caprotti valve gear no other cylinders from other surviving locomotives could be used.
The next step would have been to copy the original cylinder drawings from the old British Railways technical records held by the National Railway Museum in York, but the NRM were unable to find them.
The only choice was to get access to the remaining half cylinder in the Science museum and try and put together a set of drawings by carefully measuring what was left, as well as examination of the only other surviving Caprotti-geared engine in the UK, which had similar but smaller cylinders. With only incomplete or smaller parts to work from there had to be some educated guess work in the absence of any pyhsical reference. Finally they were satisfied and had a set of drawings to send to the foundry. Some time later the original drawings were actually located and lent to the enthusiast group, who were delighted to discover that the drawings were identical, apart form one section of casting which was ⅛" (3.175mm) thicker.
Did the loco run again? Yes, rather well, as it happens.
https://www.youtube.com/watch?v=jKC_duEEd9Ehttps://www.youtube.com/watch?v=z4Lgv7RopnYA.