Signal Flasher

The chassis is a Freightliner
Greg

In my 2003 Adventurer the flasher modules (2 as in last post) were under the dash on the left side. Get to them from the floor. Flasher modules were attached to Winnebago wiring hung from other wiring with zip ties. Turn on a turn signal and listen for the 'ping', follow the sound.

Be helpful to know what chassis.
Most flashers on gas rigs are located under the dash in the fuse panel.
Some have two, one for turn signals and one for the four way flashers.