Flasher Unit Bad ?

[SoldierwithaM109A3]

Ok I replaced the flasher unit and now the flasher light on the turn signal indicator has now gone dead I unplug the flasher unit the new one and it goes back to on but does not flash . Could the switch go bad as well and how do I test that to see if its working taking out of the truck ? THX tried with digital pulse test light and normal one still Solid I followed the hook up perfectly

 

[SoldierwithaM109A3]