You don't HAVE to chop your loom up!
I removed the HRC plug, and crimped on compatible pins. ONce the pins are all inserted inthe the unit, you wrap a piece of tape around the whole lot, and fill with silicon to creat a plug.
Perfectly acceptable batle-damage repair on aircraft, and worked fine on my bike for years.
(this is before I added the silicon)
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball