Locobob's Interior Mod Thread

[cvette98pacecar]

Originally Posted by Locobob

I've been considering a noise filter, did it hurt sound quality any?

Not a bit.

[Locobob]

Tried pulling the head unit out and laying it on the passenger side carpet with minimal accessories plugged in - still getting alternator whine. Also checked out the front speaker connections and didn't see any grounding issues there.

[Locobob]

Okay so now I tried unplugging the amp/speaker harnesses (4 wire blue and 4 wire white connectors) from the main connection and I'm still getting noise and alternator whine from all four speakers! How is this even possible, they are not connected to the head unit at all. I thought the 2 4 wire connectors were it for the speaker/amp assemblies, is there a separate harness somewhere which powers the amps?

[Locobob]

Reviewing the FSM electrical supplement again and I see that amp power and ground are indeed on a different connector. Getting pretty frustrated with the old Bose stuff, starting to think I should go back to my original plan and just do a aftermarket amp/speaker install. I talked to a car audio guy yesterday, we discussed doing an 8in sub in the storage bin behind the drivers seat, 6x9's in the rear, maybe 5x7's or 5-6in up front. We also discussed compact amps, it would be nice to fit something into the passenger side bin that sits on the upper shelf. Fosgate has their little PBR series that might fit the bill - 300W mono for sub and 300W 4 channel, I could stack them and they would fit nicely, not sure if 300W on the 4 channel is enough though.

[-=Jeff=-]

I never used one of those converters. I made RCA harnesses that plugged into the speaker connectors at the CCM and to the radio RCA out. Then taped the exposed connection.. I had no whine

[Locobob]

Originally Posted by -=Jeff=-

I never used one of those converters. I made RCA harnesses that plugged into the speaker connectors at the CCM and to the radio RCA out. Then taped the exposed connection.. I had no whine

I'm getting the whine with the Bose speakers/amps completely disconnected from the converter box so the problem is somewhere in the oem Bose stuff.

[secondchance]

Locobob,



Tough to see with pic but positive side of the capacitor is connected to the alternator positive terminal and the negative side is connected to the alternator mounting bracket. This works!

[Locobob]

I talked to Dr. Don today. Basically he said my best bet was to either try a power line noise filter or go full aftermarket. He was pretty leery of the capacitor on the alternator idea.

[XfireZ51]

Originally Posted by Locobob

I talked to Dr. Don today. Basically he said my best bet was to either try a power line noise filter or go full aftermarket. He was pretty leery of the capacitor on the alternator idea.

I blew up an alternator that way a very long time ago.

[cvette98pacecar]

Originally Posted by -=Jeff=-

I never used one of those converters. I made RCA harnesses that plugged into the speaker connectors at the CCM and to the radio RCA out. Then taped the exposed connection.. I had no whine

Jeff, I bought a adapter that goes from RCA outputs to the GM connectors. I had a whine so I added the noise suppressors. For 24.00 it was not worth the effort in building one.

http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER