AN MD80 CAPT RPTED PROBS REMEMBERING TO TURN ON-OFF THE ENG IGNITION SWITCH IN 2 DIFFERENT COCKPIT LAYOUTS OF THE SAME ACFT.

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WE MISSED THE ENG IGNITION SWITCH ON THE AFTER LNDG CHKLIST. UNLIKE ALL OF OUR OTHER MD80'S; THOSE THAT I'VE FLOWN HERE FOR 12 YRS (AT LEAST SOME WE BOUGHT FROM ANOTHER ACR) HAVE AN IGNITION SYS THAT DOES NOT HAVE A CONTINUOUS IGNITION OPTION. THEY HAVE AN IGNITION SWITCH WHICH IS OFF OR IN 1 OF 2 HIGH JOULE POS. OUR CHKLIST HAS BEEN MODIFIED SO THAT; ON THESE ACFT; THE IGNITION IS TURNED ON SHORTLY BEFORE LNDG AND TURNED OFF DURING THE AFTER LNDG CHKLIST. ON THE OTHER MD80'S; THE IGNITION IS PLACED IN DURING THE DSCNT CHKLIST AND TURNED OFF DURING THE PARKING CHKLIST. THIS WAS THE SECOND LEG WE HAD FLOWN ON A NEWLY ACQUIRED ACFT. AFTER LNDG; WE HAD TO WAIT QUITE A WHILE TO PULL INTO THE GATE BECAUSE THE RAMP WAS CLOSED; DUE TO LIGHTNING IN THE AREA. DURING THE PARKING CHKLIST; I REALIZED THAT THE IGNITION WAS STILL ON AND THAT IT'S DUTY CYCLE HAD BEEN EXCEEDED. I WROTE IT UP IN THE LOGBOOK. FRANKLY; THE ONLY REASON THAT WE DIDN'T FORGET TO TURN IT OFF AFTER LNDG DURING THE FIRST LEG; WAS BECAUSE WE FORGOT TO TURN IT ON. DURING DSCNT I REACHED UP TO TURN IT ON AND REALIZED THAT IT WAS TOO EARLY; BUT THEN WE DIDN'T GET IT ON BEFORE LNDG. WHILE DISCUSSING THIS LATER; THE FO BROUGHT UP WHAT SEEMS TO BE A REASONABLE SUGGESTION. IF WE STANDARDIZED TURNING OFF THE IGNITION DURING THE AFTER LNDG CHKLIST; WE COULD SAVE IGNITERS ON THE NEW ACFT; YET NOT HURT ANYTHING ON THE OLD ACFT. WE HAVE; IN FACT; CHANGED THE AFTER TKOF CHKLIST; STANDARDIZING TURNING THE IGNITION OFF DURING THE CLEANUP RATHER THAN WAITING FOR 10000 FT AS WE FORMERLY DID.