Gx3 dimmer switch

With 2 displays, is separate dimmer controls needed. If so what type of switch would you suggest.

Use on-screen dimmer

I didn't use a dimmer switch on my G3X displays. Press menu twice and set brightness on the touch screen. I believe my second screen just follows what I set on the main screen in front of me.

Andy

Thanks Andy, will do the same...

From the G3X manual:

23.4.9 Lighting
The GDU 45X/46X display and keys can be configured to track 28 VDC or 14 VDC lighting busses using these inputs. These inputs are reference voltage inputs (not power inputs) with a high impedance of ~100 kΩ for pin 43 and ~200 kΩ for pin 26. This backlight level reference signal may be supplied with something as simple as a 10K potentiometer connected to power and ground (drawing 1 mA @ 14 VDC). The center tap on this potentiometer is connected to one of the pins (43 or 26) in the following table. For providing this reference signal to more than one device, a commercially available regulated backlight voltage reference is recommended.