So are these stock coils? Are you running points or electronic ignition? Are they wired in parallel or series? Typically stock coils are 6 volt (17M6) wired in parallel with points and a ballast resistor for post '71 Commando.Stillreel said:My relatively new 12V coils are reading 4.4 ohms resistance in testing after difficult starts. Literature states 3.2 - 3.6 is optimum. Is 4.4 allowable error or have I cooked the coils? They are less then 4 years old.
Thanks
BC