Really crappy, I don’t have another word for it: The old contact point ignition with its coil. I tried 3 of them on 6 volts and the combination of 6 volt battery, starter motor and points always gave me trouble, both with cold and hot starts. So I installed an electronic one, and NO 123 ignition. Just an English ignition, specially for 6 Volts OR 12 Volts. First installed with the 6 Volt installation and it worked perfectly. Still does, but now on 12 Volts.