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Topic: replace the bose

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replace the bose (1/8)
 10/21/22 8:38pm
Broke Ol Biker
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Joined: 10/5/2022
Posts: 6

Looking to replace the failed bose system. I realize I will have to run new wiring. My question is what stereo/head unit will fit into the opening so I dont have to butcher the dash face or it stand out like a sore thumb? Any recommendations?

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Re: replace the bose (2/8)
 11/14/22 6:26pm
lkedmiston
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Williamsburg, PA - USA

Vette(s):
1989 coupe


Joined: 6/8/2019
Posts: 12

When I replaced mine, I bought everything I needed from Crutchfield.  I was told to make sure to disconnect the wiring harness to the bose relay to avoid battery drain problems.  On '89 it's up behind the breadbox, but can be reached through a hole while the stereo and heat controls are out.  I just left the relay where it was, to avoid a lot more dash disassembly.  I used the orig. +/_ speaker wiring (they go back to the stereo, not the relay)  Once I got the stereo wired into the factory harness, the only thing that doesn't work like orig. the stereo lights won't dim via the headlight switch (may be different with a different deck)  Another thing I read, if your new deck is long (deep?) as in CD player (mine's short, all digital) you may have to trim some plastic in the back of the hole.  It took me a while to get it all figured out, but I've owned a lot of cars and installed a lot of stereos.  I have no idea why the pic turned downside up, but you can see at the bottom (top) where I put the mic so I can make phone calls.  Opinions vary, but I don't consider my thumb sore enough to worry about.

Re: replace the bose (3/8)
 11/16/22 12:20pm
Barn find
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Lakeville, MA - USA

Vette(s):
1987 convertible


Joined: 4/19/2014
Posts: 17

Looks like you installed it upside down looking at the picture 😃

Re: replace the bose (4/8)
 11/16/22 9:39pm
Broke Ol Biker
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Joined: 10/5/2022
Posts: 6

Thanks! Yes, I was actually wondering if the original wiring to the speakers could be used. I am replacing in a 1990 ZR1, dash is a bit different. I would think the wiring is probably fairly much the same and in a similar location. Thanks for the response!

Re: replace the bose (5/8)
 11/16/22 11:26pm
Phat98
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Crystal Springs, MS - USA

Vette(s):
1973 Mille Miglia Red LS5 1981 Claret Red 1982 White 1985 Silver Metallic 1988 Yellow 1993 Torch Red ZR-1 1994 Torch Red Coupe LT1 1996 Dark Purple Metallic LT4 2000 Torch Red 2001 Light Pewter 2003 Z06 Millennium Yellow 2009 Atomic Orange


Joined: 7/29/2011
Posts: 25

You don't want to use the existing wiring. Long story short - the present wiring is only delivering line-level signals, the amps themselves are located at the speakers - these wires will not support a good amped head unit with good speakers.  Save and secure the present wiring (in case you want to return back to OEM equipment) and run new speaker wiring (at least 16 gauge, depending on setup).

I've done about a dozen installs on later model C4s. Kenwood and JVC head units seem to fit a little better than Pioneer, but they all will fit with a little trimming. 

 



______________
 
1973 Mille Miglia Red LS5 - SOLD
1981 Dark Claret Metallic - SOLD
1982 White
94 Torch Red LT1
96 Dark Purple Metallic LT4
02 Black Convertible - SOLD
03 Millennium Yellow Z06
09 Atomic Orange Z51
 
Re: replace the bose (6/8)
 11/17/22 1:13pm
lkedmiston
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Williamsburg, PA - USA

Vette(s):
1989 coupe


Joined: 6/8/2019
Posts: 12

Actually, when I talked to Crutchfield tech support, they said as long as I didn't drop in a power amp and go over 100 watts RMS per channel, the factory wire was more than sufficient to run my JVC deck.  It's been in over a year now and no problems.

Re: replace the bose (7/8)
 11/25/22 9:26pm
Broke Ol Biker
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Posts: 6

thanks!

Re: replace the bose (8/8)
 11/26/22 9:09pm
Phat98
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Crystal Springs, MS - USA

Vette(s):
1973 Mille Miglia Red LS5 1981 Claret Red 1982 White 1985 Silver Metallic 1988 Yellow 1993 Torch Red ZR-1 1994 Torch Red Coupe LT1 1996 Dark Purple Metallic LT4 2000 Torch Red 2001 Light Pewter 2003 Z06 Millennium Yellow 2009 Atomic Orange


Joined: 7/29/2011
Posts: 25

Are you going to do the install or having a shop do it? Either way, do some research on the "SYS" issue that will arise after replacing the head unit. A couple of resistors will fix it, just have to know where to put 'em.



______________
 
1973 Mille Miglia Red LS5 - SOLD
1981 Dark Claret Metallic - SOLD
1982 White
94 Torch Red LT1
96 Dark Purple Metallic LT4
02 Black Convertible - SOLD
03 Millennium Yellow Z06
09 Atomic Orange Z51
 
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