Ignition on keyed power source for a 2016 3500

[TFabian]

Getting ready to install a Air Lift compressor for air bags on my 2016 3500 Laramie Longhorn. Want to tap off of a keyed ignition-on power source for the relay so that the compressor only runs when the ignition is turned on. Anyone know of a source that won't cause any problems with the ECM? No service or wiring manuals available yet for a 2016 that I can find.

 

[Larry Willard]

I used the wire under the console that feeds the charger plug to switch a relay on my '13, don't know if that has changed or not.
Larry

 

[TFabian]

For future reference, I ended up using a fuse tap on fuse F93 in the main fuse panel in the engine compartment. This fuse goes to the center console/cigarette lighter.