you cant
Pull the cover off the dash in front of the passenger seat. In the freightliner I drove (I don't remember the year: sorry.) I found the flasher in there.
buckle your seatbelt
The flasher is an internal function of the computer inside the under hood fuse box.
It will be up under the dash above the pedals OR on the passenger side up in the dash.
The Turn On - 2006 was released on: USA: 5 November 2006
The turn signals are controlled by the computer in under hood fuse box, called a TIPM. There isn't a serviceable relay.
computer
Insrt key and turn to first settingt leave it there for about 15 min to allow computer to reset turn key to off position then turn key on to start car
It is an internal part of the TIPM ( the computer in the under hood fuse box ).
Soloman's Turn - 2006 SUSPENDED was released on: USA: 2006
The Turn On - 2006 1-2 was released on: USA: October 2006
The Turn On - 2006 1-3 was released on: USA: October 2006