dont know what happend but now im getting engine noise coming though my speakers. im running 3 amps and 2 ground leads from back to frount. what should i check. I tried putting a ground from my deck to the amps. it stopped some noise some what but not all. thanks

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Ford Explorer Limited 2000 AWD 4.0
Pioneer AVH-P5700DVD
JBL GT0 1201.1 ll (2)
JBL GTO75.4 ll
Ma Audio Hard Kore 18
Ma Audio HK57C (2)
Feb 11 138.9 DB
May 27 143.7 Db
bassbox 153.9 ? could it be true!!!