Hi everyone, I'm completely new to forum posting but I have read many whilst restoring my 1978 Yamaha. Up until yesterday the bike ran and had no trouble at all other than it ran a bit sluggish. I decided to clean out the carburettor, air filter and fuel tank to sort the issue. I noticed when taking the bike apart that a wire had come loose from a 2.4kOhm resistor under the handlebars which must have been disconnected months so I reattached this. Once I had completely cleaned everything and reassembled the bike I put some fuel in and started it up. It fired up instantly and was sounding much better once it had warmed up. All of a sudden the bike started revving quite highly on it's own and I couldn't stop it. In a panic I turned off the ignition which didn't seem to work and then I disconnected the ignition coil (see picture) as I was worried I could cause engine seizing problems. The bike cut out after 3-5 seconds (I thought with the coil disconnected it would cut straight out). Now I can't get a spark at all and I've no idea what the issue could be. I'm no electrician but using the haynes manual I have ruled out the possibility of it being a faulty coil, plugs or plug caps. I've taken the LHS engine cover off and there's no spark between the points either when the kickstart is operated. If anyone has any help or information I would hugely appreciate it! I'm guessing that the sudden revving could be to do with the carb but will I have caused any damage to the electrics...? Thanks, J