AN ACR MLG CREW WAS DISTRACTED BY THEIR TCASII SELF TESTING ON THE RWY.

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FLT WAS CLRED ONTO THE RWY; POS AND HOLD. AS WE TAXIED INTO POS AND TRANSPONDER WAS TURNED ON; TCASII SYS BEGAN IMPROPER SELF TESTING. SELF TESTED 3 TIMES AND DISTRACTED CREW. WE DEPARTED RWY 10L AND ON CLBOUT REALIZED STROBES AND LNDG LIGHTS WERE NOT TURNED ON. NEITHER FO NOR MYSELF COULD RECALL BEING CLRED FOR TKOF. CALLED BACK TO TWR AND WERE ASSURED WE WERE CLRED. PROBLEM HAD MANY FACTORS. IT WAS THE LAST LEG OF A 7 1/2 HR DAY OF FLYING. WE WERE BEHIND SCHEDULE AND WANTED TO GET BACK HOME (IN THE GO- MODE). CREW WAS FATIGUED AND HAD FLOWN TOGETHER ON PREVIOUS DAYS. TCASII DISTRACTED US FROM OUR NORMAL ROUTINE OF LIGHTS ON WHEN CLRED FOR TKOF. CREW GETS ALONG VERY WELL AND WAS LAX IN XCHKING EACH OTHER. WE ALL KNOW THAT WHEN WE GET TIRED; MISTAKES DON'T GET NOTICED AS FAST. ALSO; WHEN A CREW HAS FLOWN TOGETHER FOR A WHILE; WE GET LAX IN SOME OF OUR XCHKING DUTIES. AS FATIGUE SETS IN; IT SHOULD BE A WARNING FLAG TO SLOW DOWN AND XCHK EACH OTHER; ESPECIALLY ON THE LAST LEG OF THE DAY.