Falkon ignition
 

I recently bought a used plane that came with an older ZDZ80 with a Falkon ignition. Upon inspection I found the braided wire going to the spark plug cap has broken off at the sodering on the cap. Can I solder this back together and if so, what about the small wire inside (does it join to anything)? The person who I bought this off of, said that the engine just came back from RC Showcase where some work was done to it.