Coil adaptors for GPZ500 on early XVs

One of the biggest joys of riding (daily-ing) old junkers is the fact that sooner or later the parts supplies dry up. This hardly matters, when some plastic cover for some doodad is no longer available. (Except you're trying to restore your poop-brown interior on your 80ies commuter car) But it gets a bit more substantial, when consumables run out. Now ignition coils have a long lifespan, but after a while...

As a rider of a XV 750/920/1000/TR1 you know these, even though they normally come with a plug at the end of the cables:

As you might have guessed, they are no longer available. Stock coils have a primary resistance of around 3 Ohm +/- 10% and a secondary resistance of around 8.5kOhm. Armed with these values I started shopping around and found the coils out of a GPZ500, which come it at the same specs, but are physically smaller and still have detachable leads.

So why do all this? Firstly, nope the coils on the Tractor are still fine, but the coil-on-plug coils on the turbo are a bit dubious and I plan on reviving that thing in the coming months and once I get started on tuning the carb and ironing out all the other bugs the old girl has, I want to be sure that I am not also going to chase some spark issues.