please help me

[oolesh]

hi everyone am new in electronics i got a premade clap on clap off curcuit bought it on EBAY so i want to mod it by putting a bulb instead of the led !! so i want to know if i can use a transistor 2N2222 to active a 5v relay check it here http://www.mediafire.com/i/?uajicuj37t7nbm7 btw do i need to put a resistor between A and B if yes what the resistor can i put??

[pebe]

Your add-on circuit will probably work OK, dependong on what the original output is like.

Can you give details of the circuitry that drives point A?