Radio Wiring guide - Page 2

adamamam · Dec 22nd, 2013, 17:03

Quote:

Originally Posted by pacman67

The sub has Audio feed from the speakers and two voltage supplies. The yellow is a switched live via the ignition, and the red is an on signal 12v if you like from the stereo, bit like a relay takes its main power from the battery and the stereo powers it on and off. If you have no 12v on the red your sub wont work.

Ah! Thanks!

This doesn't seem to have been covered in a idiot guides I've been following.

So it looks like the wire from 'A9' in the original harness (which I didn't ever have) should be connected to something, but what?

Is the 'remote lead/power aerial' connection suitable (200mA max)?

pacman67 · Dec 22nd, 2013, 17:12

Yes its the point marked A9, it is a low current feed, also supplies the amplifier in your roof aerial if you have a v40 and without you will have next to no radio reception, and for s40 it drives the telescopic aerial up. Not always red on aftermarket head units, sometimes yellow or poss blue.

adamamam · Dec 22nd, 2013, 17:18

You chaps are my heroes!

Blue and white (JVC anyway) to thin red and bingo! Doof doof doof!

Thanks so much to you lovely people!

Adam

pacman67 · Dec 22nd, 2013, 17:29

Quote:

Originally Posted by adamamam

You chaps are my heroes!

Blue and white (JVC anyway) to thin red and bingo! Doof doof doof!

Thanks so much to you lovely people!

Adam

Its all easy, only when you know how !

RichT4 · Dec 22nd, 2013, 17:35

So anything I need to add to my guide?

adamamam · Dec 22nd, 2013, 17:47

Your guide is superb!

The only issue I had (other than realising that the reason the previous guy hadn't used the post ignition power was that it was fused, and he clearly thought it was easier to cludge the radio wiring than replace a fuse!) was the subwoofer switching.

You do cover it, but I was too stupid to realise I needed to wire the thin red wire (as mentioned by you) to the head unit 'remote/power aerial' wire.

I was working on your 'only three connections needed' statement, which would cover a car WITHOUT subwoofer.

My sabotage of your thread is over, I promise! Again, I can't thank you enough!

Adam

juke · Dec 29th, 2013, 10:34

Further to updating the head units has anyone got any recommendations for replacement rear pillar speakers?
Apart from cutting the mettal away to accommodate bigger units, Ive not found anything to fit

RichT4 · Dec 31st, 2013, 08:02

Quote:

Originally Posted by juke

Further to updating the head units has anyone got any recommendations for replacement rear pillar speakers?
Apart from cutting the mettal away to accommodate bigger units, Ive not found anything to fit

If you can't find similar units, I'd be tempted to cut away at the metal mate.

Grumpywurzel · Dec 31st, 2013, 18:14

Good guide there mate, but for the sake of £7 from Halfrauds I just bought the convertor cable set.

Did you have to remove the plastic runners from the old stereo? My cage wouldn't fit in the gap!!

juke · Jan 8th, 2014, 11:51

Quote:

Originally Posted by Grumpywurzel

Good guide there mate, but for the sake of £7 from Halfrauds I just bought the convertor cable set.

Did you have to remove the plastic runners from the old stereo? My cage wouldn't fit in the gap!!

I cut off the runner's to make the hole properly double din
Just got a harness today so I can get a feed to the door speakers and back.
Not sure if it needs low power inputs [RCA on my round din connector ] from the head unit or normal feeds

Dec 22nd, 2013, 17:12	#12
pacman67 VOC Member Last Online: Dec 6th, 2023 14:09 Join Date: Feb 2009 Location: Richmond N Yorks	Yes its the point marked A9, it is a low current feed, also supplies the amplifier in your roof aerial if you have a v40 and without you will have next to no radio reception, and for s40 it drives the telescopic aerial up. Not always red on aftermarket head units, sometimes yellow or poss blue. __________________ Regards, pacman67 previously held: V40 TD & S40 2ltr P1,V40 P2 sport lux, V70 XC P1, XC70 P2, V70 D5 P2 and P3, V40 T4,V70R, C30 R Design. currently held: V70 P3 D5 SE LUX, XC90 MK2 Inscription Pro.

Dec 22nd, 2013, 17:47	#16
adamamam Senior Member Last Online: Oct 24th, 2020 11:07 Join Date: Dec 2013 Location: Lincoln	Your guide is superb! The only issue I had (other than realising that the reason the previous guy hadn't used the post ignition power was that it was fused, and he clearly thought it was easier to cludge the radio wiring than replace a fuse!) was the subwoofer switching. You do cover it, but I was too stupid to realise I needed to wire the thin red wire (as mentioned by you) to the head unit 'remote/power aerial' wire. I was working on your 'only three connections needed' statement, which would cover a car WITHOUT subwoofer. My sabotage of your thread is over, I promise! Again, I can't thank you enough! Adam __________________ 2001 V40 1.8i 120k miles.

Dec 31st, 2013, 18:14	#19
Grumpywurzel Gert Navy Bouy Last Online: Aug 13th, 2014 20:17 Join Date: Oct 2013 Location: Plymouth	Good guide there mate, but for the sake of £7 from Halfrauds I just bought the convertor cable set. Did you have to remove the plastic runners from the old stereo? My cage wouldn't fit in the gap!! __________________ '98 V40 2.0T, 4300K 35w HID's, Pioneer Head Unit

Dec 22nd, 2013, 17:18	#13
adamamam Senior Member Last Online: Oct 24th, 2020 11:07 Join Date: Dec 2013 Location: Lincoln	You chaps are my heroes! Blue and white (JVC anyway) to thin red and bingo! Doof doof doof! Thanks so much to you lovely people! Adam

Dec 22nd, 2013, 17:35	#15
RichT4 Sunny Days! Last Online: Jun 6th, 2020 08:40 Join Date: Nov 2013 Location: Havant	So anything I need to add to my guide?

Dec 29th, 2013, 10:34	#17
juke New Member Last Online: Sep 2nd, 2014 22:16 Join Date: Feb 2012 Location: witham	Further to updating the head units has anyone got any recommendations for replacement rear pillar speakers? Apart from cutting the mettal away to accommodate bigger units, Ive not found anything to fit

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