dimmer

I have a F5061 with a handy 25-pin dsub connector on the back. I know Icom sells a GPS unit that plugs into it, but I cannot find any documentation on the pinout for that connector. I think one of the pins is a dimmer and I would like to use that. If anyone has used this connector or can point...

An apparently common (idiot) problem. 12VDC incorectly wired and blows protection diode. Also bakclight no longer works correctly. I have replaced the protection diode, but ONLY remaining problem is backlight operation. Using MENU to test backlight options I find: HIGH and LOW setting produce...