.These are used to replace the original Lucas Points Plate Assembly (and Condensers) and the Advance and Retard Mechanism.
The Boyer Bransden Electronic Ignition is proved to be very reliable, easy to fit, with no maintenance.
For the best results a stroboscope should be used.
The Boyer Bransden range of Analogue MKIII ignition units are being progressively changed to improved MKIV versions. The changes are designed to improve the timing stability if engine starting with a very low or variable battery voltage. The design changes are internal and do not affect the external appearance of the unit. Identified by the ‘MKIV’ caption