You got any left over parts?
Oil pump drive gear on back of clutch not there, not meshed or broken from installing clutch with it not meshed?
Oil pump gear pin not installed?
Main galley plug left out somewhere?
Oil pickup not installed correctly/ blocked with fried clutch crap?
DON'T run it til you find it.
PS how long has it run and did you crank it over with no plugs in it til the light went out before firing it up?