Thanks @TommyDee , tell me if I'm right "you moved the cut between the lower wires, are you using them as switch? If yes, is there a problem for the choice of positive/negative? Also, what's the effect of splitting the plate for the coil? Will you normally solder it the two opposite site?
One last thing, where are conneted these two 18 gauge (i guess) magnetic wire? Can you make a larger photo?
Is that the wire that you have used for the coil and the other end is connected to the normal positive?