BOS TWR CTLR DESCRIBED LAHSO EVENT WHEN HE OR SHE FAILED TO BOTH COMPLY WITH APPROPRIATE PROCS AND ENSURE ALL EQUIP WAS IN OPS.

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LNDG RWY 27 AND RWY 22L LAHSO; DEPARTING RWY 22R AND RWY 22L. LCL CTL POS COMBINED. PREVIOUS CTLR ADVISED ME THAT ARRS WERE ON RWY 27 SINCE WIND WAS 300-330 DEGS; 10-12 KTS. WIND WAS VARIABLE; IN AND OUT OF LAHSO LIMITS. IN THIS TYPE OF SIT; LAHSO ARRS ARE CONDUCTED ON AND OFF; TEMPORARILY SUSPENDED UNTIL WIND IS WITHIN LIMITS. I HAD SEVERAL ARRS ON RWY 27 THAT HAD BEEN CLRED TO LAND. SEVERAL ACFT DEPARTED RWY 22R AND A COUPLE WERE WAITING FOR RWY 22L. AS I WAS PLANNING MY NEXT RWY 22L DEP; AN A330; I OBSERVED ACFT #1 TURN IN TO RWY 22L. WIND WAS 320 DEGS. AS I CHKED THE WIND AGAIN; IT WAS 310 DEGS; WITHIN LAHSO LIMITS. I DECIDED THAT THE RWY 22L DEP WOULD WAIT UNTIL ACFT #1 LANDED. IF THE WIND CHANGED; ACFT #1 WOULD HAVE TO GO AROUND. RWY 22R NOT AVAILABLE FOR JET ARRS. ACFT #1 CHKED IN; I ISSUED A LAHSO LNDG CLRNC; WIND WAS 310 DEGS. ACFT #1 ACKNOWLEDGED THE HOLD SHORT INSTRUCTIONS. ACFT #2 WAS ON FINAL TO RWY 27. TFC DEPARTED RWY 22R. I MONITORED THE WIND; ISSUED TURNOFF INSTRUCTIONS TO A PREVIOUS RWY 27 ARR; MAKING SURE OF CORRECT READBACK OF HOLD SHORT INSTRUCTION FOR RWY 22R. WE HAVE HAD SEVERAL RWY INCURSIONS HERE AND RECEIVING A CORRECT READBACK OFTEN REQUIRES SEVERAL ATTEMPTS. I CHKED THE WIND AGAIN AND IT WAS 310 DEGS. I REALIZED THAT I STILL NEEDED TO ISSUE ACFT #2 THE TA REF ACFT #1 LAHSO LNDG. ACFT #2 WAS ALREADY TOUCHING DOWN ON RWY 27. ACFT #1 LANDED ON RWY 22L AND AS HE WAS TURNING OFF THE RWY ADVISED THAT THE LAHSO LIGHTS WERE NOT FLASHING. I CHKED THE LIGHTING PANEL; THEY WERE OFF. I TURNED THEM ON. WHILE MONITORING THE WIND CONDITIONS; CONSIDERING GAR INSTRUCTIONS; ASSURING READBACK OF HOLD SHORT INSTRUCTIONS; I DID NOT ISSUE THE TA TO ACFT #2 IN A TIMELY MANNER. THE WIND CONDITIONS WERE MORE APPROPRIATE FOR A RWY 33/27 CONFIGN. RWYS MOST NEARLY ALIGNED WITH THE WIND; WHICH WOULD HAVE ELIMINATED ANY LAHSO WIND CONCERNS. THE LOWER ARR RATE WOULD NOT HAVE BEEN MUCH OF A FACTOR. THE LCL CTL POS PROBABLY SHOULD HAVE BEEN SPLIT; ESPECIALLY IN VIEW OF ALL THE RWY INCURSIONS AND RECOMMENDATIONS TO PREVENT THEM. SPLITTING LCLS REDUCES CTLR WORKLOAD. I SHOULD HAVE RECHKED THE LAHSO LIGHTS TO MAKE SURE THEY WERE ON; EVEN THOUGH THEY APPEARED ON; DURING POS RELIEF.