hi had me procom swapped out on another bike works fine , put on new pick up coil, tested negative side of coil - by puting my live multimetre wire on live battery terminal and the earth on the brown and yellow negative wire on coil, it works when cranked sending a negative to the coil, BUT still no spark, checked starter switch ok , dont know what to do now?

lowered 2 in stretched front ,widened front forks, aubergine black pearl paint 40 ford rear light standard exhaust all baffels removed, pods, 155 main, 45 pilot, thruxton needle, 16 tooth sprocket procom ignitor set to no 5