1957 Bull Motif wiring loom question

[Pucketsport]

I recently purchased a new loom for my 57 Minor and have a question that I hope someone can answer. The wires going to the fuse-box are all correct except one. There should be a brown wire feeding one of the fuses but my loom has a no brown wire at this junction, instead it has a brown and purple wire . Is this an error in the loom ? There are 2 other brown and purple wires which are correctly exiting the loom at the regulator which I have connected but it makes no sense that there would be another brown /purple wire exiting at the fuse box with no brown wire.

[IslipMinor]

The wiring loom does look to be correct for a 1957 car - here is an extract from the MM Workshop Manual (p308 in the 1970 14th Edition):

Wiring Diagram 1956 - 1960 Extract.jpg (180.87 KiB) Viewed 1421 times

I think the brown/purple wires are actually brown/blue (or at least they should be for a 1957 car!), and they are both connected to the 'A1' terminal as you have done. One of these feeds the ignition and lighting switches and the other feeds the A3 - A4 fuse, which is what you are looking for.

The single brown wire is connected from the starter switch to the 'A' terminal on the regulator box, and provides the supply to everything else on the car, which is why the cable is larger than the rest.

Hope that explains it?

Do you have a pdf copy of the MM Manual? If not put 'Morris Minor Workshop Manual' into Google and usually the first hit is a site, with a sort of 'fishy' name, that provides a download of the complete 1970 14th Edition manual - essential reading for all Minor owners!

[Pucketsport]

Thanks you so much Richard for that reply, this has been really helpful

[Pucketsport]

BTW the wires are Brown and blue , my mistake

[Pucketsport]

Richard I took your advice and have downloaded the MM manual, its so much better than my Haynes manual. The trouble with the Haynes manual is they have copied the photos so many times and as a result they have become fairly useless smudges on the pages.
Thanks again for your help