MIX-UP REF TFC TO FOLLOW IN TFC PATTERN.

Narrative

I WAS APCHING PIE FOR A FULL STOP LNDG. I HAD RECEIVED CLRNC TO ENTER THE ATA; PLUS BEEN GIVEN A SQUAWK CODE AND TOLD TO ENTER A R DOWNWIND FOR RWY 35R. SHORTLY AFTER RECEIVING THIS CLRNC; RADIO COM BTWN MYSELF AND THE TWR WAS BLOCKED BY ANOTHER ACFT KEYING ITS MIKE CONTINUALLY FOR A COUPLE OF MINS. WHEN THE OTHER ACFT STOPPED THIS I WAS BEGINNING TO ENTER THE R DOWNWIND FOR 35R. I IMMEDIATELY ASKED FOR SEQUENCING; BUT THE TWR STARTED TO TALK TO ANOTHER ACFT AND I RECEIVED NO REPLY. THEN I WAS TOLD BY THE TWR TO FOLLOW AN SMA X. THE ONLY SMA X I SAW WAS ON FINAL AND I CALLED BACK TO THE TWR AND TOLD THEM THAT I HAD THE SMA X IN SIGHT AND THAT I WOULD FOLLOW IT. AFTER THE SMA X PASSED BY ME; I TURNED ONTO A R BASE AND THEN A FINAL FOR 35R. UPON REACHING A 1/2 MI TO 1/4 MI FINAL I ASKED FOR A CLRNC TO LAND AND THERE WAS NO REPLY FROM THE TWR. THEN THE TWR CLRED ANOTHER ACFT BEHIND ME TO LAND ON 35R. UPON HEARING THIS; I REALIZED I HAD FOLLOWED THE WRONG SMA X AND THAT I WAS ABOUT TO LAND OUT OF SEQUENCE; SO I PREPARED TO DO A GAR; AND AS I WAS DOING THIS; I AGAIN ASKED FOR CLRNC TO LAND AND THIS TIME TWR REPLIED WITH A CLRNC FOR ME TO LAND ON 35R AND I LANDED AND EXITED THE RWY WITHOUT INCIDENT. THE BEST WAY TO HAVE AVOIDED THIS DANGEROUS SIT WOULD HAVE BEEN TO CLARIFY WITH THE TWR THAT THE SMA X THAT I SAW ON FINAL WAS THE ONE THAT I WAS SUPPOSED TO FOLLOW WHILE I WAS STILL ON DOWNWIND.