Hooking up power to new Fusion stereo

grady33

GreatGrady Captain
Joined
Jun 30, 2008
Messages
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Location
Ocean Pines, MD
Model
Express 330
Ran new AWS12 wire from back of old stereo in 330 Express to behind the panel. I’m upgrading to new Fusion stereo and thought I’d run new wire since I was running NEMA and new speaker wires.

Anyhow, I pulled panel and hooked up NEMA 2000 to fuse block on back wall. I’d like to tie in to stereo switch in panel which has a 10 amp fuse. I see where the positive wire goes but where do I connect the negative wire and ground? Do I even need the ground?

34BCDD70-1C07-4B46-90E5-C6898EA1AB17.jpeg

Attached is where I think I need to attach the positive and negotiate wires. Is this correct?