wtb. big ol JDM carbon gt wing

FYI - those three outputs You are using are all RCA OUTPUTs. Front, Rear, Substage (see pic).
You do not plug a source into this deck unless You have the proper equip

Per Pioneers support webite:

[left]

Using the AUX source [/left]

[left]An IP-BUS-RCA Interconnector such as the

CD-RB20 or CD-RB10 (sold separately) lets you

connect this unit to auxiliary equipment featuring

RCA output. For more details, refer to the

IP-BUS-RCA Interconnector owner‘s manual.

[/left]

Pioneer loves their proprietary gear my friend.