Two colour wiring

HI All
Not needing to get any harnesses, but i am needing to get a selection of different lengths of 2 colour wiring ie black/blue yellow red etc and all the other colours, have done a man look at the internet but to no avail, lots of single colours, no use
i am assuming that most of the wiring is 1mm 16 amp with exception of starter/ignition, please let me know if i am wrong
thanx

Something like this?
https://www.ebay.co.uk/itm/77-COLOU...114024&hash=item25e3d919eb:g:C6YAAOSw8oFX0v2L

Have a look at this site, Autosparks. This is their FAQ page and if you scroll to the bottom you will find a "Cable application guide" which should tell you all you need to know. Are you going for traditional PVC cable or modernising to thin-wall?
I have used Autosparks, they are very good and their prices are keen too.

https://www.autosparks.co.uk/faq

IDE look at vehicle wiring products who strangley are just up the road from Autosparks.
Both are good companies for sure so feel safe with either but VWP have a wider range.

Autosparks are great for a new harness though.