4017 question

am gonna make a wire tester usin a 4017. i need it to light 3 LED's 1 at a time 4 1 second. question is, how do i get it to only to to 3 then start again?

not sure if I understand what you want, but anyway...

connect the fourth output on the 4017 (pin 7) back to the reset pin, that way it will reset the counter after the 3rd clock pulse.

Is that what you wanted?

yes, that was exactly what i wanted. thx