Jkob10

When I drive my rear spears whine as my rpms go up, I think it's too much power from the alternator does anyone know how to fix that?

screw05

Are they stock or aftermarket speakers?

Jkob10

Aftermarket, I have an amp and subs, a full sound system

Bruski

It is either a grounding problem or poorly insulated spreaker/RCA wires. Your alternator isnt the problem. Also keep power and speaker wires away from each other.

mdavis83

Keep your power and RCA's away from each other. Speaker wires don't matter.

Bruski

I ran my power wire (0 gauge) from the battery under the truck by the frame rail and up through the rubber plug under the back seat and my RCA's under the door sill plate.

Jkob10

Okay thank you all

screw05

Rather then redoing your wiring get a set of ground loop isolators ( from eBay ) should fix your problem

http://pages.ebay.com/link/?nav=item...d=400449563720

besel53

My '04 factory speaks get the same thing from the rears. Nice whine sometimes, even when the radio is powered off! I haven't looked into it yet, but my experience as an elec. tech tells me that there is some type of power wire near something, guessing in the dash behind the head.