MacBook Pro Back Lite Keyboard not bright enough

I have an older MacBook Pro operating 10.9.5 and the backlight functions normally but the brightness needs to be increased. I have searched the web but there does not appear to be an answer for a keyboard that functions normally ( ex. dims, shut off in bright light, turns on in dark surrouding), but is not bright enough.

Any suggestions gratefully received.

Thanks in advance.

via ehMac.ca https://ift.tt/2H2LyWm