For reference, I found the part number for the RS250 coil mating connectors.

Sumitomo 6189-0533 HW 090 Series 2 Pin Female.

I recently bought a kit on Amazon that had 5 of them for $10US.

https://smile.amazon.com/gp/product/B079FZHR3N/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1#productDetails

A few months ago I happened to see a pair of used RS250 coils for sale on the Japanese auction site....I was surprised at the high price. I did a Google search on the part number and oddly enough it turned out a dealer in the US had one listed new for what I thought was pretty good price. I called them and found out they had two so I bought them. Hence, my quest to find connectors. I'm in the process of rebuilding my engine after a seizure. I'll fabricate some brackets and install them. I'll post pics on my build thread when I get to that point. Should be easy enough to make a short harness that mates to the stock harness space connectors.

I'm not sure which pin on the RS coil goes to which on the harness. But not sure it really matters either since they are isolated from chassis.
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MC28 SP

For those in the USofA, you can also buy the correct Honda / RS Sumitomo connectors from:

http://www.cycleterminal.com/hw-series-090.html

For those in the UK, you can buy the correct Honda / RS Sumitomo connectors from:

http://www.automotiveconnectors.com/housings.html

I have not been able to find any of the 3 or 4 pin orange Sumitomo connectors yet.

Can anyone tell me which pin on the HRC coil goes to the green with orange stripe wire? Left or right in attached pic.

Thanks in advance.
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MC28 SP

Come on folks, surely someone knows?

I'm not sure this is going to be much help, but on the NX5 coil, the green wire would be to the right, with the brown wire to the left.

Thanks. Your input is consistent with email I got the other day from Matt at Tyga.

Just happened to see this. Are you still working on this project? I've done this on my MC28 and can send photos of my set up.

Scott

Its all done with brackets made. I imagine more info will be useful to others at some point.