@Xulafqar
Thanks very much for very professional contribution 
Handbrake cable is broken, I checked it. And yes, I know the procedure to replace the handbrake cable but it needs lot of effort and tool (I don't have tool kit) which is not easy for a beginner like me :o
No, now the car has front wheel disk brake
the brake system was upgraded by previous owner. But today I noticed, when I applied the brakes first and second times, there was some noise from front wheel. However, no noise sounded after 5 minutes, even I applied brakes much harder but it worked well without any noise! Is it normal?
Yes, dashboard needs to be removed because it the fan is working but demist function is not working 
The wires can be connected by using these things

And this is the simplest thing, and cheaper as well! Why to use damn sticky and messy plastic tape? 
