hi, i need to wire the middle lug on a flipper coil to the EOS. the original wire is missing. the machine is a 1970s Williams EM. I heard that i need an 18 gauge tin wire. my local Jaycar store only has 17 gauge copper wire. Will the 17 gauge copper wire work? Or else which size wire should i use and where can i buy it from? any help would be appreciated. thanks