Food for thought. On EVERY Z I have ever owned, when I replace the original VR with a new "after market" one, BTW there are NO OEM ones and have been gone for quite some time, I always end up re-building the original one. IE clean and adjust as per the Nissan Maint Manual. The after market ones are junk and always have been. The amperage will fluctuate constantly and dive you bananas. The adjustment of the points is pretty straight forward and spelled out nicely in the Nissan Service Manuals.