HF850 in 2007 Avalanche

Hi Folks,

Newby here...was wondering how to determine mute wire in 2007 Avalanche stereo wiring harness?    Also, is there any issues as far as where you pickup power to run HF850?

Thanks!!

I usually have them in stock. If I dont, then I can usually get them in 2-3 business days.

https://www.parrotkits.com/

Has anyone ever tried to locate the mute using the test light method on a 2007 GM? Why do we need to use that $100 harness if we tap the speakers after the amp and hook up the mute to the stereo. I still don't understand why this would effect the data bus system.

I don't know how the warranties work from state to state, but in California the car manufature needs to prove the modification likely caused the damage to the part in question for the warrany. i.e, if the transmission goes out, tapping into the speaker wires for a hand free kit likely did not cause that. But, if you blew out your stereo system, then maybe. I used to be in the auto repair field and ran across this a few times. I lowered my 2003 Yukon 6 months after I bought it (which everyone told me it would void the warranty) then I had a defective spring suspention item afterwards, that was not involved in the lowering  they covered 100% by the warranty. Other states, I do not know, but I do know alot of the warranty void myths are urban legends in CA. I would talk to someone knowlegable at you dealership and get the truth. (not High school Billy working for minimum wage

Good luck, and happy installing

Back to my original question,

What is the reason for the expensive harness Cell Site has for the 2007 GM's. Lets take warranty voids out of the picture. If I was installing a Parrot into a 2007 Tahoe with Bose, on-star, nav ect... why can't I tap into the speakers after the amp, find both powers and ground? Does the mute for the stereo effect the data-bus system? That is the only thing I can think of but I don't know how it could possibly do so.

By the way, I am glad to see more people using the Hands free section of 12volt.com. It was a desert for a while.

Point well taken, customautomotiv, but I do have to agree with elicoleman...what makes this harness so expensive?  Afterall, all I am needing is one full time hot, one ignition switched wire, a ground and a mute wire connection.    I have a external speaker, so there is no need to tap into the stereo.  Does the Parrot harness offer more features than I need (or am I missing something?)

I had a harness for my '03 Avalanche that was called a GMCell or something like that.  It was about 25 bucks...I hate to be tight fisted about the price of the harness and I don't want to invade the factory wiring. 

I guess I am looking for an elegant way to do this economically.....may not be possible!!??

Ppagliai wrote:

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I had a harness for my '03 Avalanche that was called a GMCell or something like that.  It was about 25 bucks...I hate to be tight fisted about the price of the harness and I don't want to invade the factory wiring. 

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It was probably GMCSS-2 from cell site. There is now a GMCSS-3 for 2007+ GM's, that Cellsite told me, mocks the hardware in the radio. It is no longer just wires. It includes some harware. I am still in search af the answer what the hardware does. I would definitly be leary of not using the harness on a 2007 GM vehicle. I don't know what would happen if you tapped the mute on the radio, or cut the acc power (using relay mute method) to the radio while the car is running. It may trigger a check engine light or worse.

Customautomotiv: I understand your point, I do use harnesses most of the time. (all the time on Ford and GM). But I recently bought a harness for a 2004 Lexus from quickconnect and all it did for me was 12+, Gnd, and mute. I had to locate 12acc and run the speaker wires after the amp. That paticular harness saved me about 3 minutes of install time and added $50 to the customers bill. Not worth it. Cellsite harness are great for factory system installs. I use them alot. I wish they would move beyond GM and Ford.

Hi Folks,

I did end up purchasing the GMCSS-3  for the 07 truck.  I am very pleased...you will have to purchase the LOC-1 to address volume output issues if you want to run it the the speakers in the vehicle instead of the dedicated speaker.  That is a $5 item.

I did find the harness at www.AutosportStyle.com for under $100.

Thanks for all your help!

pp

Hey Customautomotiv

I would be interested in knowing how you push the wires through on Fords. Do you use terminals on the wires? I hate having to buy harnesses for everything. Thanks!