REFLECTOR: Dimming the lights

[Al Gietzen]

With my essentially glass cockpit, and screens with their own brightness
control; I have only to dim about 300 ma worth of stuff.  I put in a simple
rheostat to do that.  The GMA 340 (audio Panel) has 2 connections to the "hi
side lighting bus" and a connection to the "low side lighting bus".  Please;
this is not an airliner. And all it has is some LED's in the buttons to
highlight your selection.

 

I thought I could connect the "hi-side" to +14v and the "low-side" to low
side from the rheostat.  But, wait a minute - how does that work?  Does it
have to switch from one to the other?

 

Maybe someone here knows about this hi-side, low-side bus thing, and can
clarify this for me.

 

Thanks,

 

Al (up to my elbows in wires)

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