relay need for bt integration w/ speakers

I need a relay diagram to integrate the speaker output from a Motorola HF850 bluetooth unit into my factory speakers in an 02 civic. I have a mute relay set up and I want to also push the speaker output to my two front speakers once the radio is muted. Also, will I need a hi/low converter to achieve desired sound quality? Thanks!

you're going to need two relays, three if you don't already have one for the mute.. mute set up: 85 negative trigger from motorola mute wire 86 12v 87a car side of accessory wire 30 radio side of accessory wire this will interrupt power to the radio when ever the bluetooth is supposed to "mute" the radio. therefore, the radio will shut off.. relays for front speaker take over: 85 negative trigger from motorola mute wire 86 12v 87 + from bluetooth speaker output 87a + from radio speaker output 30 to + input of car speaker 85 negative trigger from motorola mute wire 86 12v 87 - from bluetooth speaker output 87a - from radio speaker output 30 to - input of car speaker this will switch the car speaker's input from the radio, to the bluetooth whenever the bluetooth is enabled. i highly recommend using another relay to give you a better trigger ground for your relays from the single mute wire: 85 negative trigger from bluetooth 86 12v 87 ground 30 to other relay's 85 terminals. also, to prevent having a billion relays to hide, buy some smaller relays from radio shack and put them all on a project board or something similar so you only have a "module" type enclosure to hide rather than 4+ relays. another word of advice, cut the speaker outputs to the bluetooth speaker that comes with the motorola for the output to your car speaker, not the line out wires. last thing, this will turn off your factory radio, and allow the bluetooth to take control of one of your car speakers, alternatively you can keep the radio on, and just interrupt the audio going to the other speakers with more relays..

running speaker leads through a magnet coil (relay) will cause alot of noise.

i could see that happening, but i've used that method for integrating onstar and haven't had any issues thus far.