I wanted to post a jpeg but for some reason I'm unable to. I have a coil wire on my 1957 dizzy, the coil wire has be cut and a plastic cylindrical piece which has a self taping screw on each end has been connectedbeteeen the two cut pieces of the coil wire.

I was thinking it might be a resistor of some type? currently there is a ballast resistor mounted on the firewall too. I wasn't sure exactly what this part is and I know it would be helpful to post a pic but i CAN'T

Any thought as to what it might be would be appreciated.

Thanks