The Sparkrite SX6000 is an Electronic Ignition System that can be fitted to the 23D, 25D, 43D and 45D distributor and amplifies the spark, giving you a simple electronic upgrade.
 
Red wire =12 volt switched supply
Black wire = Negative on the coil
 
Benefits: 
Improved performance
Improved durability
Improved fuel economy
 
Requirements: 
Negative earth
All 6 - 12 Volt points and condenser systems for the 23D, 25D, 43D or 45D distributor
Ignition coil over 1.4 Ohms