i have a 2001 mustang with the mach 460 sound system... i put in an eclipse cd5444 head. I used the metra 70-5519 wiring harness. After installation when i start the car i can hear engine noise in the speakers. I was told it was a grounding issue, but i grounded everything precisely how i was told to. I do not have aftermarket amps, the only thing not out of the factory is my deck. It did not make this noise with the stock radio, so i assume the amps are grounded properly and it's a problem with my wiring. I was told to combine all the grounds from the metra harness including the chassis ground and the amp grounds and connect them all to the single ground coming from my deck. The connection here is direct and very strong. Please help.

Never mind... i fixed it... please delete post...