Thats what I did. Plus they are about $6 of ebay. I assume the 250 is AC fired? Mine was fairly simple to wire in, stator wire to the supply voltage pin, ignition advance to the trigger pin, coil and the rest are straight forward. I found
these for the 2 plug type CDI's. There are other plugs out there, but they can get expensive, the quality of the pig tails I posted are pretty good considering the price.