Well as far as dentar is concerned I usually get my car's work done from G-8 Markaz.. I don't exactly remember the name of Workshop but owner name is Qaiser bhai...very nice guy and he has hell good of a denter with him....
For Electricals I usually go to a guy named NONI Ustad... G-7 Khadda market Younus Autos....we have been having our cars electricals sorted out by him for I guess at least over a decade... 
Hope it helps 