If I remember correctly, it came with bullet type connectors, I just snipped them off and soldered on some spade type connectors from the auto parts store. Then slathered those connections with a dab of dielectric grease and followed with a wrap of electrical tape.
As far as the mounting bolt spacing, I seem to remember some fiddling, I may have enlarged the existing holes or made new holes,..........whatever I did it was not enough of a problem to become etched in my memory.
And thinking about it a bit more and looking at the photo, I now remember that I did drill two new holes in the taillight bracket. The two attachment screws on the Model A light, are narrower than the stock mounts. If you look very closely at my photo you can see the stock bolt hole just to right of the STOP light.