The ignition system on the Honda CG 125 is simplistic and all components can be tested easily so no excuses for guessing what part is faulty , test before you buy
The Honda CG 125 ignition consists of the following components
Ignition switch obviously this is a switch but it is important with correct operation the bike
will not operate .
Generator generates the voltage need to run lights and recharge the battery for starting
Pick up coil on some models you will have a pick up coil , this used for the ecu to calculate the timing of the spark for best running conditions
running conditions .
HT ignition coil this is used to turn the 12v battery voltage to 20,25000 volts need to
make a spark jump across the spark plug gap
CDI unit use internal mapping to create the best running condition via the electronic ignition
Regulator , this takes the ac voltage generated buy the generator and converts it to no greater than 14 volts and DC current .
Spark plug NGK DPR8EA-9
Buy all these parts from here Ebay UK
or try here on Amazon UK