Where do you find the indicator flasher unit on a 1970 foden truck?

HI I THINK IT DEPENDS ON WHICH MODEL YOU HAVE GOT , I HAVE AN S39 OR TWO AND I AM JUST DOING THE WIRING ON A 1972 LEYLAND ENGINED UNIT AND THE FLASHER UNIT IS MOUNTED ON THE LEFT HAND SIDE OF THE UPRIGHT WHEN YOU HAVE TAKEN THE FRONT OFF. THE FUSE BOX IS ON TOP OF THE DASH BOARD ON THIS ONE. BUT ON ONE OF THE OTHERS THE FUES BOX I NOTICED THE OTHER DAY IS ACCESSED FROM THE HOT AIR DUCT TAKE THE SCREWS OUT REMOVE THE PLATE AND IT IS THERE AND THE HORN RELAY IS ON THE BECK OF THAT PLATE , NOT TO BAD A JOB IF YOU ARE A KEY HOLE DOCTOR. BUT IT MAY NOT BE THE FLASHER UNIT THAT IS THE PROBLEM IT COULD BE THE RUBBER PLUG SOCKETS. IF YOU WANT TO TALK YOU CAN E MAIL ME ON hevhev99'hotmail.com