Thedwarfamishrapper

Hi Guys, I have a DT125lc mk 2 which was running great until MOT time when my side lights failed to come on. On further inspection and after referring to the Haynes manual the wiring was a bit of a shambles. Decided to rewire the bike behind the cowling as the rest of the wiring looked ok. Basically somewhere along the line I lost my spark via the coil. I found a flywheel current via a voltmeter and connected this to the coil - no spark still? Once I had connected a wire with a current to the coil the current disappeared? When I removed the wire and tested it again there is a strong current?? Im better at mechanics than I am at electronics! Any ideas? I dont want to spend money on new coil, cdi etc when its a simple fix? thanks in advance