Hi,
@blakespot
Had the same problem with my A1200, found out that you have to use the power from the AT plug on the power supply. By this I mean you have to read out the pins coming off the power supply plug that plugs into the motherboard. If you are trying to use the power from one of the Floppy / Hard drive plugs, not enough power their to support the Blizzard accelerator.
Hopefully this helps.
smerf