Kenwood DDX470 to pioneer GM-D9605 amp wiring questions

[Eagles512]

Having a bit of trouble finishing my install. I have the kenwood head unit going to my pioneer 5 channel amp using the middle RCA slot on the HU and the left (ch A) on the amp. Right now the tweeters and mids work great but if I use the HU to try and use only the front or rear speakers it screws up. If I select "right" then only the tweeters play. Rear plays all 4 and front plays the doors mostly but still play the tweeters too. My question is, do I need another RCA cable going from the right slots on the HU so the middle and right ones will be used and plug those into the ch A and ch B RCA inputs on the amp? And then run the sub off the head unit using the 2 sub. Out plugs and put that into the SW ch on the amp? So all 6 red/white plugs will be used on the amp?

Right now since it's only one cable from the HU, I have the amp switched to the 2chan mode instead of 4 chan. Just trying to figure out how to wire all 5 speakers and get the most sound out of them. Thanks for any help.

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[Eagles512]

Link to the back of the head unit

I recently had a Kenwood DDX470 head unit installed in my 98

 

---------- Post added at 08:19 PM ---------- Previous post was at 08:18 PM ----------

 

Back of the amp.

Amazon.com : PIONEER GM-D9605 GM Digital Series Class D Amp (5-Channel Bridgeable, 2, 000 Watts max, With Wired Bass Boost Remote) : Electronics