Oh, i know this has been asked a zillion times, well, maybe not the exact question...
I am in a situation where I will be riding a 1999 VFR for a few weeks and want a spare rectifier. I really cannot justify a factory one for a 3 week trip (considering it costs 10% of what i paid for the bike), and i cannot get one that needs to be "heavily" modified (drilled, etc.) because i dont plan on packing a grinder and drill with me.... I found a Chinese rectifier for a CBR 600Fi that shares the same wiring and dimensions (though different plug). It seems like a good quick fix if needed. If this was my own bike i was planning on riding long term, i would obviously go for a good one.
Anyways, just curious was the danger of using the CBR600 (2001+) rectifier would be?