Mazda Rotary Club

Cars by Model Type => 2nd generation RX-7's => Topic started by: sheprx7 on June 13, 2009, 12:49:18 PM

Title: speaker wiring
Post by: sheprx7 on June 13, 2009, 12:49:18 PM
have had a little serch and cant find anything that can help me. i am fitting in an aftermarket stereo and have hooked up the live,ign live and earth but cant for the life of me find the speaker wires! now the original stereo used a large cable housing around 10-11 wires one of which i have found to be the remote aerial, so i assumed these would be front and rear =ve\'s and -ve\'s but they\'re not! any ideas?
Title: speaker wiring
Post by: batman on June 13, 2009, 01:18:01 PM
check you have speakers in the holes first thing then check the remaining wires have no power out puts with and without ignition on then use a square 9 volt battery to pop /test all the remaining wires can take a little time pair them up and go through different combinations till you hear  a pop then lable that up thats a pair repeat till you have fronts and rears job done
failing that wire new cable to everything
Title: speaker wiring
Post by: pdtaylor18 on June 13, 2009, 01:38:37 PM
Quite common for some cars to have the wires cut,dont know why they do it but they do. If you take your centre console out you might have a better idea of what has gone on but all the FC\'s have the wires regardless.  If its been butchered then its easier to install new thicker wires as the originals are rather thin. In the drivers and passenger side kick panels are the green block connectors,if you can locate the spealer wires there then at least you can tap into it there. To run new cables through the door hinges etc is a right pain in the butt and time consuming job to do it properly.

Heres the diagram for you.
Title: speaker wiring
Post by: pdtaylor18 on June 13, 2009, 01:42:43 PM
that did not save correctly,try this one:
Title: speaker wiring
Post by: sheprx7 on June 13, 2009, 03:42:51 PM
Quote from: batman;616053check you have speakers in the holes first thing then check the remaining wires have no power out puts with and without ignition on then use a square 9 volt battery to pop /test all the remaining wires can take a little time pair them up and go through different combinations till you hear a pop then lable that up thats a pair repeat till you have fronts and rears job done
failing that wire new cable to everything

 
but the thing is the old clairon was working fine so i know the wires are connected fine and i have salvaged all te wires that connected to the old stereo so im really confused as to why i cant find the speakers :S
Title: speaker wiring
Post by: pdtaylor18 on June 13, 2009, 04:54:12 PM
Well they must be there for the old one to work, think you are missing something thats right in front of your eyes. Have a look at the diagram for the wire colours but lets not forget that your new unit might be faulty,can happen.
Title: speaker wiring
Post by: sheprx7 on June 13, 2009, 11:39:25 PM
Quote from: pdtaylor18;616096Well they must be there for the old one to work, think you are missing something thats right in front of your eyes. Have a look at the diagram for the wire colours but lets not forget that your new unit might be faulty,can happen.

 
 
have taken the unit out of my golf so i know it works. am very confused and must be missing something!:3Confused  checked the colour of the wires coming from the speakers but unfortunately they dont seem to correlate to any behind the centre console
Title: speaker wiring
Post by: L18M on June 14, 2009, 12:16:12 AM
didnt the fc headunits have like a pre-amp to them?
dunt sound right to have a poxy / stock headunit to run 6 speakers (2 in rear, 2 in door and 2 undeer dash)
IMO just rewire it and chuck in an amp for good measure :)
Title: speaker wiring
Post by: sheprx7 on June 14, 2009, 12:20:03 AM
Quote from: L18M;616198didnt the fc headunits have like a pre-amp to them?
dunt sound right to have a poxy / stock headunit to run 6 speakers (2 in rear, 2 in door and 2 undeer dash)
IMO just rewire it and chuck in an amp for good measure :)

would make sense if they did have a pre amp as the huge cable on the back of the old unit is labled \'to amp\'.
 
really cant be botherd to run new cables!!! will have another look about later today and report back! probly with the reply \'they were right in front of me all along!\':rollin
Title: speaker wiring
Post by: L18M on June 14, 2009, 12:39:40 AM
worth looking for the pre-amp then (think was under the glove box area) then jus bypass the pre-amp

i re-wired it and it wasnt too bad (tho i kinda like doing things like that)
jus saw u located in oxfordshire. im sometimes there. wheres pics of ur fc?
i cant remember who had the white fc in wheatley
Title: speaker wiring
Post by: rx7pat on June 14, 2009, 12:40:25 AM
if it is running though an amp you may find the speaker wires run to where the amp was like in the boot or under the seat. If not at the head unit you should have had two (brown or black i think) connectors which used to fit in the old head unit. One would have 12v, GND and Memory 12v and a few others but the other shoud have all the pairs of speaker cables. They will be all the same thickness and the pairs should be colour coded with a stripe to indicate +/- for each speaker.
Title: speaker wiring
Post by: L18M on June 14, 2009, 12:43:59 AM
oh.. rx7pat reminded me of sth.. if the headunit went to pre-amp then that signal would be a low level output which would not be able to power the speakers.
best to extend wires from the pre-amp to the headunit speaker out.
Title: speaker wiring
Post by: sheprx7 on June 14, 2009, 12:44:09 AM
Quote from: L18M;616212worth looking for the pre-amp then (think was under the glove box area) then jus bypass the pre-amp
 
i re-wired it and it wasnt too bad (tho i kinda like doing things like that)
jus saw u located in oxfordshire. im sometimes there. wheres pics of ur fc?
i cant remember who had the white fc in wheatley

 
:)
 
(http://i170.photobucket.com/albums/u261/shep306/100_0520.jpg)
 
(http://i170.photobucket.com/albums/u261/shep306/100_0521-1.jpg)
Title: speaker wiring
Post by: pdtaylor18 on June 14, 2009, 12:19:16 PM
Pre-amp is on the drivers side usually just behind the dash speaker if you have one.
Title: speaker wiring
Post by: sheprx7 on June 14, 2009, 01:20:23 PM
All done, found the pre-amp and bypassed the wires. cheers guys
 
(http://i170.photobucket.com/albums/u261/shep306/100_0648.jpg)
Title: speaker wiring
Post by: L18M on June 14, 2009, 11:47:36 PM
good stuff :)
thats one less thing for u to sort out now :)
Title: speaker wiring
Post by: sheprx7 on June 14, 2009, 11:54:27 PM
Quote from: L18M;616453good stuff :)
thats one less thing for u to sort out now :)

 
almost, still need to wire in a permanant live as the cable that was labled perm live turns out to be ign live! :2Mad:Giggle
Title: speaker wiring
Post by: L18M on June 15, 2009, 12:49:34 AM
it might just be a case of the ign live and live being switched over at some point. i found out that hard way when i got my fc. jus swap them over n try. save u wire-in new wire.

im not sure about uk fc\'s but jap fc\'s lots of the switches are on the negative feed if it makes any scense? )bit random but might come in handy in future lol)
Title: speaker wiring
Post by: rx7pat on June 17, 2009, 06:28:18 PM
Well done matey! Also the drivers window switches are the wrong way round to lol I keep opening the passangers window!