1995 E300D Question on Fuse #7 & Blue & Green fused relays

[ohiomike]

My fuse #7 and the blue and green fused relays in but above the fuses in the fuse box have "no power". Where do they get their power from? Is it the pushbutton unit in the dash or maybe the Klima relay or somewhere else? These elements make the radiator fan run by eventually getting power to it. How could I tap a source and supply power to these parts to basically energize those fans? Thanks.