Note and precautions: CFL's contain mercury which is hazardous material, so it should be handled accordingly
Most CFL lamps, electronic circuits are working perfect and are still useable, only the bulb goes defective. CFL circuit of 18-24 Watts are useful for the activation ofreplacement type two feet 18-20 Watt Florescent Tube Light bulb.
Step 1: Find a CFL
You will need a CFL as shown in picture. Any CFL of which bulb is defective, broken or has outlive its life is useful for this modification. Drive voltage may be according to your country 110 Volt or 220 Volts. In my country (Pakistan) voltage standard is 220/230 Volts.