Help Installing Sound System

[Hulk311 10+ year member]

I am having a hard time figuring out how to install my new system. Here are my components:

• Kenwood Excelon X494
  
• Clarion EQS746 1/2 DIN Graphic Equalizer with Built-in Crossover
  
• 1 pair of CDT speakers
  
• IDQ 12" Sub
  
• 4 channel hifonics amp (an old one, not one of the current ones that aren't as good)
  

Also, I will be hooking up my iPhone to the deck as well, not sure if that matters with the setup or not.

I have three question:

1. How exactly do I hook up all of the RCA cables (Seems like there's a lot of different ways, which one would be the best)?
   
2. Do I set the equalizer on the Kenwood deck or the Clarion?
   
3. Correct me if i am wrong but I think I can set the gains on the deck, equalizer, and the amp? Which component should I do this on?
   

Also I'd like some clarification on how to hook up three wires from the equalizer:

ground wire

power wire

Remote turn on

Can I hook up the power wire from the equalizer to the headunit power wire instead of the car battery? Do I just splice the two wires together?

The remote turn on wire, is that part of the wires that comes with the headunit or do I have to buy this wire?

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