Please find enclosed info which I have found to work and be more accurate in my car when doing HI-FI installs! (and they may or may not apply to your car!!)

Following info. from Haynes and personal experience! Use this as a guide only!!

There are two main DIN/ISO plugs on the OEM wiring loom for the stereo head unit, one has all the wiring for the speakers (Brown coloured and has the release clip in the centre of the side), the other all the power and control wiring (Black coloured and has the release clip offset on the side). Both of these conectors might be joined together, and just slid apart to seperate! There is also a third block (If you are luck enough to have it) which is for connecting the head unit to the OEM CD multi-player under the passenger seat.

ALTHOUGH THIS IS WRITTEN MAINLY FOR THE MKI FABIA, NOTES FROM PREVIOUS VAG CARS THAT I HAVE OWNED HAVE BEEN ADDED!

THESE ARE THE COLOURS & PINS OF THE OEM SKODA WIRING LOOM TO CONNECT TO THE STEREO HEAD-UNIT

BLACK CONNECTOR (this has the release clip offset on the side)

8d/pin1 = White cable with Purple stripe = vehicle speed sensor (to increase volume with speed) OEM single DIN head-unit does not have a pin for this.

8d/pin2 = vacant (This according to ISO is for the mute function of a connected telephone)

8d/pin3 = Grey cable with White stripe = VAG diagnostics through EOBD socket (DO NOT USE WITH NON OEM as 12v and can muck up your new head unit, especially if a diagnostic tool is connected!!! So disconnect from plug or cut and seal live end of wire)(This according to ISO is for the reversing light signal)

8d/pin4 = Brown cable with Red stripe = 12v switched supply with ignition (This according to ISO is for a 12v constant supply)

8d/pin5 = Black cable with Blue stripe = 12v constant supply to battery via Fuse No. 45 (20A) OEM single DIN head-unit does not have a pin for this, as this is to provide additional power for double DIN satnav unit. (This has on other VAG cars been a Brown cable with Red stripe = 12v switched supply with ignition)(This according to ISO is for the electric retractable aerial)

8d/pin6 = Grey cable with Blue stripe = dashboard illumination

8d/pin7 = Black cable with Blue stripe = 12v constant supply to battery via Fuse No. 45 (20A). (This has on other VAG cars been a Red cable = 12v constant supply to battery via fuse No. ??)(This according to ISO is for a 12v switched supply with ignition)

8d/pin8 = Brown cable = Earth to E3 earthing point (Under the centre console in front of the gearstick).

BROWN CONNECTOR (this has the release clip in the centre of the side)

8n/pin1 = Red cable with Green stripe = Rear deck drivers side bass speaker pin1 (+) (Red cable with Green stripe from this to tweeter in rear door)

8n/pin2 = Brown cable with green stripe = Rear deck drivers side bass speaker pin2 (-) (Brown cable with White stripe from this to tweeter in rear door)

8n/pin3 = Red cable no stripe = Front drivers door bass speaker pin3 (+) (Red cable no stripe from this to tweeter in rear door)

8n/pin4 = Brown cable with Red stripe = Front drivers door bass speaker pin1 (-) (Brown cable with Red stripe from this to tweeter in rear door)

8n/pin5 = Blue cable no stripe = Front passenger door bass speaker pin3 (+) (Blue cable no stripe from this to tweeter in door)

8n/pin6 = Brown cable with Blue stripe = Front passenger door bass speaker pin1 (-) (Brown cable with Blue stripe from this to tweeter in door)

8n/pin7 = Blue cable with White stripe = Rear deck passenger side bass speaker pin1 (+) (Blue cable with White stripe from this to tweeter in door)

8n/pin8 = Brown cable with White stripe = Rear deck passenger side bass speaker pin2 (-) (Brown cable with White stripe from this to tweeter in door)

OEM CD CHANGER UNDER PASSENGER SEAT WIRING

Pin3 on the CD Changer = Brown cable = Earth to E3 earthing point (Under the centre console in front of the gearstick).

Connector C3 on the back of the stereo headunit (smaller then the other two above)

20a/pin13 = Blue cable to pin 1 on CD Changer (CDC data in, according to ISO)

20a/pin14 = Green cable to pin 4 on CD Changer (CDC data out, according to ISO)

20a/pin15 = Yellow cable to pin 2 on CD Changer (+12v permanent, according to ISO)

20a/pin16 = Red cable to pin 6 on CD Changer (+12v switched - maximum 300mA, according to ISO)

20a/pin17 = Grey cable to pin 8 on CD Changer (CDC data ground, according to ISO)

20a/pin18 = Brown cable to pin 9 on CD Changer (audio frequency ground, according to ISO)

20a/pin19 = Purple cable to pin 10 on CD Changer (CDC audio frequency left channel, according to ISO)

20a/pin20 = White cable to pin 7 on CD Changer (CDC audio frequency right channel, according to ISO)

Cables from pins 18, 19, 20 should be all wrapped together in a metal foil screen. Or they are 3 cores of a screened cable.

You might also need an adaptor to connect your new headunit to the OEM ariel plug. The OEM plug is a right angled male, with the OEM head unit a "projecting" female. Most after-market head units have a "recessed" female socket, so an extender plug/adaptor (ISO/DIN) may be required, which can be easily found in Halfords, etc.

FOR FABIA MKI

Also to fit an aftermarket DIN head unit you will need a cover trim piece to fit above the now exposed space above the head unit (under the row of aux. buttons on dash). This is a cheap piece (£3 ish!!) code no 6Y0 857 231 B41 from your local Skoda dealer.

FOR FABIA MKII AND ALL ROOMSTERS

Also to fit an aftermarket single DIN head unit you will need a surround trim including a lower cubby hole as OEM headunit is a double DIN unit. This costs about £35ish from your local Skoda dealer code no. AZO 700 001

Some early basic spec Fabia and Roomster MKII's might not have a double DIN slot as the centre part of the dash is slightly different and you end up having a 1+ DIN size slot, so a larger facia cover piece is required. Not seen a Skoda one yet but try this; http://www.superskod...e-martinek-auto

EDIT

Pins 3,4 & 7,8 were allocated to the wrong speakers, double checked with Kenwood, Pioneer etc. all OK now!!! Added CD info!

Edited 10 May, 201115 yr by fabdavrav

Hi, could anyone tell me how do I remove speaker cables from the brown ISO block? I have removed yellow locking tab, how do I then remove them? Cheers :wonder:

Hi, could anyone tell me how do I remove speaker cables from the brown ISO block? I have removed yellow locking tab, how do I then remove them? Cheers :wonder:

Using a very small flat bladed screwdriver insert into the compartment for the pin in the block and press/flatted the tab on the pin.

Thanks allot, it wasn't easy but I managed in the end, I damaged the first 2 pins, but the other 2 are OK as I developed a better technique after the first 2. I will make a photo guide tomorrow for this as im sure plenty of people get stuck with these.

Are these pins VAG specific to that particular ISO? Or can I get appropriate pins from a motor factors shop? And when I do get some replacement pins is it just a matter of pinching them on with pliers or is a special tool required?

Many thanks, fabia19. :yes:

Thanks allot, it wasn't easy but I managed in the end, I damaged the first 2 pins, but the other 2 are OK as I developed a better technique after the first 2. I will make a photo guide tomorrow for this as im sure plenty of people get stuck with these.

Are these pins VAG specific to that particular ISO? Or can I get appropriate pins from a motor factors shop? And when I do get some replacement pins is it just a matter of pinching them on with pliers or is a special tool required?

Many thanks, fabia19. :yes:

You removing the pins in the OEM loom???? :no: I don't..I leave them alone and get a VW to DIN harness adaptor loom from Halfords and move the pins in that around!!!

You might be able to get spare pins from "Farnel in one" on line...but that is a long shot!! Carefully reform the pins...if you can.

Please find enclosed info which I have found to work and be more accurate in my car when doing HI-FI installs! (and they may or may not apply to your car!!)

Following info. from Haynes and personal experience! Use this as a guide only!!

There are two main DIN/ISO plugs on the OEM wiring loom for the stereo head unit, one has all the wiring for the speakers (Brown coloured and has the release clip in the centre of the side), the other all the power and control wiring (Black coloured and has the release clip offset on the side). Both of these conectors might be joined together, and just slid apart to seperate! There is also a third block (If you are luck enough to have it) which is for connecting the head unit to the OEM CD multi-player under the passenger seat.

ALTHOUGH THIS IS WRITTEN MAINLY FOR THE MKI FABIA, NOTES FROM PREVIOUS VAG CARS THAT I HAVE OWNED HAVE BEEN ADDED!

THESE ARE THE COLOURS & PINS OF THE OEM SKODA WIRING LOOM TO CONNECT TO THE STEREO HEAD-UNIT

BLACK CONNECTOR (this has the release clip offset on the side)

8d/pin1 = White cable with Purple stripe = vehicle speed sensor (to increase volume with speed) OEM single DIN head-unit does not have a pin for this.

8d/pin2 = vacant

8d/pin3 = Grey cable with White stripe = VAG diagnostics through EOBD socket (DO NOT USE WITH NON OEM as 12v and can muck up your new head unit, especially if a diagnostic tool is connected!!! So disconnect from plug or cut and seal live end of wire)

8d/pin4 = Brown cable with Red stripe = 12v switched supply with ignition

8d/pin5 = Black cable with Blue stripe = 12v constant supply to battery via Fuse No. 45 (20A) OEM single DIN head-unit does not have a pin for this, as this is to provide additional power for double DIN satnav unit. (This has on other VAG cars been a Brown cable with Red stripe = 12v switched supply with ignition)

8d/pin6 = Grey cable with Blue stripe = dashboard illumination

8d/pin7 = Black cable with Blue stripe = 12v constant supply to battery via Fuse No. 45 (20A). (This has on other VAG cars been a Red cable = 12v constant supply to battery via fuse No. ??)

8d/pin8 = Brown = earth

BROWN CONNECTOR (this has the release clip in the centre of the side)

8n/pin1 = Red cable with Green stripe = Rear deck drivers side bass speaker pin1 (+) (Red cable with Green stripe from this to tweeter in rear door)

8n/pin2 = Brown cable with green stripe = Rear deck drivers side bass speaker pin2 (-) (Brown cable with White stripe from this to tweeter in rear door)

8n/pin3 = Red cable no stripe = Rear deck passenger side bass speaker pin3 (+) (Red cable no stripe from this to tweeter in rear door). (This has been on other VAG cars with front speakers only the Front drivers door bass speaker)

8n/pin4 = Brown cable with Red stripe = Rear deck passenger side bass speaker pin1 (-) (Brown cable with Red stripe from this to tweeter in rear door). (This has been on other VAG cars with front speakers only the Front drivers door bass speaker)

8n/pin5 = Blue cable no stripe = Front passenger door bass speaker pin3 (+) (Blue cable no stripe from this to tweeter in door). (This has been on other VAG cars with front speakers only the Front passenger door bass speaker)

8n/pin6 = Brown cable with Blue stripe = Front passenger door bass speaker pin1 (-) (Brown cable with Blue stripe from this to tweeter in door). (This has been on other VAG cars with front speakers only the Front passenger door bass speaker)

8n/pin7 = Blue cable with White stripe = Front drivers door bass speaker pin1 (+) (Blue cable with White stripe from this to tweeter in door)

8n/pin = Brown cable with White stripe = Front drivers door bass speaker pin2 (-) (Brown cable with White stripe from this to tweeter in door)

You might also need an adaptor to connect your new headunit to the OEM ariel plug. The OEM plug is a right angled male, with the OEM head unit a "projecting" female. Most after-market head units have a "recessed" female socket, so an extender plug/adaptor (ISO/DIN) may be required, which can be easily found in Halfords, etc.

Also to fit an aftermarket DIN head unit you will need a cover trim piece to fit above the now exposed space above the head unit (under the row of aux. buttons on dash). This is a cheap piece (£3 ish!!) code no 6Y0 857 231 B41 from your local Skoda dealer.

thanks but i think the wirings different for an octavia

thanks but i think the wirings different for an octavia

Like I say it's for Fabia and also based on experience fitting HIFi's to other cars including VAG cars. If you are comparing my post to the other main post in this section...there are differences he says that all the wires with the stripe are + ,no it isn't!!!, and he dosn't correctly mention the diagnostics port cable that VAG use in all their cars!!! So like I say mine is based on doing it, but if you are unsure then get a multimeter set to 20dcv range, across the earth and the cable you want to test and turn on and off the ignition to find the permenent and switched wires.

EDIT found this.

http://www.tehnomagazin.com/Auto-radio-car-connector/SKODA-Car-Radio-Wiring-Connector.htm

and this

http://www.tehnomagazin.com/Auto-radio-car-connector/ISO-konektor.htm

And even this site says;

Attention:

The connector wiring may vary depending on the car manufacturer, even when ISO connectors are used. We recommend to check the car’s wiring provision before connecting the car stereo.

Please pay particular attention to pin 5, where a misconnection might cause damage to the car or radio.

Take special care when installing into ’98 or later VW/Audi/Skoda/Seat models as there may be a 12 V connection on Pin 5, which could damage the car stereo or into Ford from ’97 or later , with an ISO connector, on which damage to the car’s microcomputers is possible if misconnected.

There are lots of options for the actual wiring!!! Haynes do a manual for the Octavia and it will say in there what they all are exactly!! B)

Edited 25 April, 201115 yr by fabdavrav

You removing the pins in the OEM loom???? :no: I don't..I leave them alone and get a VW to DIN harness adaptor loom from Halfords and move the pins in that around!!!

You might be able to get spare pins from "Farnel in one" on line...but that is a long shot!! Carefully reform the pins...if you can.

When I say pins I mean the little metal clips (not the actual pins within the ISO itself) on the end of the speaker cable, the end that plugs into the Brown ISO block. Surely it is just a matter of buying some and crimping them to the speaker cable.

When I say pins I mean the little metal clips (not the actual pins within the ISO itself) on the end of the speaker cable, the end that plugs into the Brown ISO block. Surely it is just a matter of buying some and crimping them to the speaker cable.

Sorry, not the pins..the metal female socket on the end of the cable which then inserts into the ISO brown block!! I hope you've not been moving the the OEM Skoda wiring loom around?? This is why I said just get an adaptor loom as if you FUBAR this you can just get another one!! if it's the OEM Skoda loom ends that you have FUBAR then as for spares??? Farnell-in-one online or CPC online...don't know. :(

Sorry, not the pins..the metal female socket on the end of the cable which then inserts into the ISO brown block!! I hope you've not been moving the the OEM Skoda wiring loom around?? This is why I said just get an adaptor loom as if you FUBAR this you can just get another one!! if it's the OEM Skoda loom ends that you have FUBAR then as for spares??? Farnell-in-one online or CPC online...don't know. :(

Ive not really messed with anything, just one of the rear speaker cables that comes with those blaupunkt ebay speakers, I damaged one female clip when getting it out of the ISO (because I put the short cable in the R channel holes and the Long cable in the L channel holes when it should be the other way round) Im going to my local car audio shop now anyway to see if they have some.

Ive not really messed with anything, just one of the rear speaker cables that comes with those blaupunkt ebay speakers, I damaged one female clip when getting it out of the ISO (because I put the short cable in the R channel holes and the Long cable in the L channel holes when it should be the other way round) Im going to my local car audio shop now anyway to see if they have some.

Ooohhh you talking about the plugs on the back of the speakers!!! I thought you talking about the Stereo plugs!!.......

Ooohhh you talking about the plugs on the back of the speakers!!! I thought you talking about the Stereo plugs!!.......

This is what im talking about

http://briskoda.net/forums/topic/199540-how-to-get-speaker-cable-out-of-iso-photo-guide/

This is what im talking about

http://briskoda.net/forums/topic/199540-how-to-get-speaker-cable-out-of-iso-photo-guide/

Aaaahhhhh yes the guide you said you would do.....and it looks like you did FUBAR the terminals in taking them out of the ISO block...this is why I like to get from Halfords a VAG to ISO adaptor loom which is about 5" long, as then you move the wires/teminals around on that, and not the OEM loom!! Looks like you've found a place to get spare terminals as well..good hunting!!!

Aaaahhhhh yes the guide you said you would do.....and it looks like you did FUBAR the terminals in taking them out of the ISO block...this is why I like to get from Halfords a VAG to ISO adaptor loom which is about 5" long, as then you move the wires/teminals around on that, and not the OEM loom!! Looks like you've found a place to get spare terminals as well..good hunting!!!

Well to be fair I only really ruined one "terminal", the rest are ok. I just need one lol. Cheers.