It's not easy. The backlight lamp is located inside the LCD screen and in order to change it you'll have to take apart the whole LCD screen.
In the following link you can see and example of removing and replacing laptop backlight lamp.
If you have no experience, I would recommend taking your laptop to a professional repair shop. You can break your laptop if you do it yourself.
is it a warning light or the dash backlight you want to change ????
Yes, this particular watch does feature a backlight
You cannot download a backlight on a Kobo Touch e-reader.
Go to the sttings menu and select backlight then select off.
No, the Kobo Vox does not have a built-in backlight for its screen.
No, the Nook Color does not come with a backlight. However, you can adjust the brightness of the screen.
all toshiba LCD models have dynalight dynamic backlight
Backlight - 2010 is rated/received certificates of: Portugal:M/12 (original rating)
yes it does
20,000 to 30,000 hours (approx 3 years) is the average life of a LED backlight display.
you take off the dashbord and get to the clock to change the light
My guess is a LED.