I found a Way!    
be praised 'Werewolf1025'    
I did as follows:   
add these 3 lines to .\DCS World\Mods\aircraft\F-86\Input\F-86F\keyboard\default.lua 
& make sure that you eliminate the duplicates 'AN/ARN-6 Audio Volume Control - Down' , 'Battery-Starter Switch - Up' by setting the combo to 'LShift' 
 -- my NVG mod
{combos = {{key = 'H', reformers = {'RShift'}}}    , down = iCommandViewNightVisionGogglesOn , name = _('Night Vision Goggles') , category = _('Sensors')},
{combos = {{key = 'H', reformers = {'RCtrl','RShift'}}}, pressed = iCommandPlane_Helmet_Brightess_Up , name = _('Night Vision Goggles Gain Up') , category = _('Sensors')},
{combos = {{key = 'H', reformers = {'RAlt','RShift'}}} , pressed = iCommandPlane_Helmet_Brightess_Down, name = _('Night Vision Goggles Gain Down'), category = _('Sensors')},add this line to .\DCS World\Mods\aircraft\F-86\Cockpit\Scripts\devices.lua 
 devices["HELMET_DEVICE"]            = counter() -- my NVG modadd this line to .\DCS World\Mods\aircraft\F-86\Cockpit\Scripts\device_init.lua 
 creators[devices.HELMET_DEVICE]    = {"avNightVisionGoggles"}  --my NVG mod