I am installing an amp in a '98 S70 using the stock head unit and
speakers for the moment. I ran speaker wire from the amp to the
existing wires behind the headunit.

According to <http://webhome.idirect.com/~rwoodrow/> the back deck
speakers and back door speakers should be on the same wires, but when i
connected them to the amp, only the deck speakers worked. There is
absolutely no sound from the back door speakers.

Any ideas why this happened?

jmccraney@gmail.com wrote:
>
> I am installing an amp in a '98 S70 using the stock head unit and
> speakers for the moment. I ran speaker wire from the amp to the
> existing wires behind the headunit.
>
> According to <http://webhome.idirect.com/~rwoodrow/> the back deck
> speakers and back door speakers should be on the same wires, but when i
> connected them to the amp, only the deck speakers worked. There is
> absolutely no sound from the back door speakers.
>
> Any ideas why this happened?

They certainly were in the '98 S70 I installed an amp in, and the "D"
pillar and back door speakers were connected the same way in the '98 V70
that I also installed an amp in. Where are you connecting to these
wires?

--
Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)

I cut the speaker wires from the wiring harness on the back of the head
unit and ran speaker wire from these to the amp. The wires that don't
correspond to speakers I left connected.

Where should I check to see if the wires for the rear speakers are
loose?

jmccraney@gmail.com wrote:
>
> Where should I check to see if the wires for the rear speakers are
> loose?

So the rear door speakers work when connected the "old" way? There's a
connection at the speaker, of course, and a connection where the harness
from inside the car joins the door harness that's visible with the door
open. Plus there's a couple of huge connectors where millions of dash
wires connect to the car harness, but the chances of a problem there
that would only affect the rear door speakers is so remote that it could
be considered impossible.

Perhaps your new amp blew the door speakers.

--
Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)

<jmccraney@gmail.com> wrote in message
news:1156908658.139875.306480@m79g2000cwm.googlegr oups.com...
> I am installing an amp in a '98 S70 using the stock head unit and
> speakers for the moment. I ran speaker wire from the amp to the
> existing wires behind the headunit.
>
> According to <http://webhome.idirect.com/~rwoodrow/> the back deck
> speakers and back door speakers should be on the same wires, but when i
> connected them to the amp, only the deck speakers worked. There is
> absolutely no sound from the back door speakers.
>
> Any ideas why this happened?
>

I *think* you'll find the S70 has just deck speakers and nothing behind the
door cards. The V70 has door speakers and no deck speakers.

Tim..

Thanks for the help, I'll check these out.