Proximity of Chartplotter to Compass

[espresso]

I am wanting to fit a Garmin 3006 to my boat, and I suddenly noted that the Installation instructions say that the minimum distance between the magnetic compass and the plotter should be 12".
My plotter would be about 2 " from the compass.
Is this a big deal, or could the compass compensation correct for this?

[Sailmonkey]

The flux field from the GPS will change based on things like backlighting etc....you will not be able to correct for having it too close.

[lancelot9898]

I've installed a furno chartplotter/radar display closer to the magnetic compass than recommended and have noticed no variation in compass readings from having the display off or on. FWIW