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Discussion summary
YOUR RESEARCHkeep bose wiring harness help please!
Leading reported evidence
Use two of these going
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I ended up using two of these going from the speaker outs to the plugs on the adapter harness instead.
Leading evidence: 'Use two of these going' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace just the head unit and i want' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion · Original poster
I have a 2002 w/ Bose that I want to replace JUST the head unit and I want to keep the Bose Amp and speakers.
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Suggestion
Using the banana style plugs you had led to a ton of alternator noise at the amps.
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Suggestion · Original poster
You have to use the line level inputs on the adapter.
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Suggestion · Original poster
I found this on 6 speed apparently you have to use some of both plugs.
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Outcome without a verified action link
These finally gave me modern head unit sound and features that worked with the Bose amp/speakers with good sound quality.
Hi All,
I've worn out my googling skills trying to find out what head unit wiring harness to purchase. I have a 2002 w/ Bose that I want to replace JUST the head unit and I want to keep the Bose Amp and speakers. I only have this
connector the 70-1784
. However because I have the bose audio don't
I need the Metra 70-1787?
???
You would think that this would have been answered a million times on the boards, but I can't find a straight up for sure part number.
Thanks !!!!
Matt
My Corvette has four Bose amps one at each speaker, a control box and a separate receiver antenna module. Putting in an aftermarket head unit was a complete nightmare. Using the banana style plugs you had led to a ton of alternator noise at the amps. Apparently many Bose systems have this issue.
I ended up using two of these going from the speaker outs to the plugs on the adapter harness instead.
https://www.amazon.com/gp/aw/d/B001EAWS3W/ref=yo_ii_img?ie=UTF8&psc=1
These finally gave me modern head unit sound and features that worked with the Bose amp/speakers with good sound quality. All in all just avoid cars with Bose systems.
Matt,
Here's the people to help you with the right fit for your project.
This kit will allow you to upgrade your HU while keeping the Bose amp and speakers.
https://cai-store.com/collections/99...iant=380005173
I am pretty certain that it isn't a Bose power amp. And replacing it, IME, is a key to getting the "most" (pun intended) out of the Bose speaker array.
That's great news for you!!! Less problematic than the 03' - 05' MOST based systems. My best advice is to avoid trying to find cheaper wire harnesses and contact CAI. They specialize in doing radio conversions on these cars. That CAI wire harness kit in the the link above should be all you need to upgrade your HU to a newer unit.
So to help out the next guy in this situation...
You have to use the line level inputs on the adapter. There are no pre amp outputs / inputs for the bose system.
The Metra
70-1784
plug connector is what you need for the speaker line level inputs and power
You have to swap the const on and acc on power wires in the Metra connector
You need
the Metra 70-1787
connector just for the red plug that tells the amplifier to power on.
IF you buy an alpine head unit you need to purchase a brake
micro bypass
because hooking up to the hand brake is a pain and it doesn't work right
The headunit plastic kit for the lower consul doesn't really fit right so you should buy a new cubby and faceplate surround from suncoast
Console Storage shelf (shelf986) $50
Lower AC Surround Trim (9965523390001C) $7.50
I'll post some pics at a later time. I don't feel like the head unit is properly mounted because it's sticking out farther than I would like.
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