Yes Norm ,you must flip the coil over so it goes onto the core the opposite way.
The reason for this is, Magnetic field lines are continuous, forming closed loops without beginning or end. They go from the north pole to the south pole.
Cheers
Max.
Max, It has suddenly dawned on me that the aftermarket coil I purchased is just as you describe. I think that is why it is labelled as suiting both external and internal setups, that being MA05183 and MA05529. The problem was this information about flipping the coil for the different setups has not been relayed to the companies that are selling the coils. I emailed one seller and it was obvious to me that he was not certain but said he thought it should in theory work. I even emailed the company responsible for introducing these Taiwanese coils to the Australian market and they failed to reply with any information. It is obvious to me now, based on what you have told us, that I will have to flip the coil the opposite way on the core to get it to work on my older internal setup. I will test this today and let everyone know if successful. I have a feeling that this is what the problem is. Kicking myself for not thinking of this sooner!
