speaker cables and signal wires for home audio can it be used on caraudio

Yes, all the time.

I actually use standard quality studio grade interconnects as they are good quality, available in long lengths and cheaper than equivalent branded car audio rca interconnects.

For speaker wire i use ordinary 2.5mm^2 OFC for the front stage and 10mm^2 OFC for subwoofer lengths.
 
Yes, it will work. But do take note of the insulation used. Car environment is alot worse than home (esp heat and humidity). It seems that you are in vietnam. the weather is not to different from my country singapore...hot and humid most of the time. Good news is that PVC (what most cable uses) will work fine.


As other said, look for something flexible and not too thick. Because space in car is limited and need to bend around.



Another thing perhaps is safety. Maybe need to look for insulation that has fire retardant. Just in case (we won't know).