connection to extra coil

Hi Don ,the connection you are refering to is known as a transmission line.
In most magnifier systems a piece of hard copper tubing works well .In you're 
situation the dia.should be 3/4" or 1" and at least 6' long.
The reason the small wire dosen't work well is because the small dia. of the 
wire acts as one long discharge point.Thus the larger curvature of the tubing 
works much better.
Just remember the more power that you apply to your system the more chance 
you have of corona breaking off of the line.

hopes this helps ! Mike Church (CHURCHMON)-at-aol