OK AVB I did some testing and familiarising with multimeter.
Got reading of .02 on primary , should be .025 to .5, but then it was all over the shop... changing........
But the secondary was more stable at 5.89, should be 3.5 to 5.00
I will look around for another coil...... they are laying around sheds etc , just a matter of finding one.....
speedy
