Mk3 2014 Head Unit change.

[jjsmith72]

Thanks again for the pin identification... I managed to install one on my underseat subs during the week and all working great.. No issues, Inc unwanted noise, coming from sub...

What I will say now is I did have to hunt for the front door speaker wires to tap into for my speaker (high) level input...

This pic shows the 8 speaker pins....

Which is good but the middle 4 pins showing the front speakers are for the pillar tweeters...

The pins for the door speakers are these:

I found them using my phone with a cable out of headphone jack and just prodded and poked until sound came out of door speakers....

Now I've done one, I will do the other for, passenger seat, when I get time... And i will post up some install pics too...

Hi looking for some advice.

I've installed my alpine 8 inch subwoofer with build in amp today. I've connected the rca to speaker wires left and right front as shown in picture. Not sure if I should of connected them to rear speakers as don't seem to be getting much bass out of them when adjusting the gain on wired control panel. It doesn't state front or rear connection in manual so not sure what wrong as sub had lots more base in my old mk2 leon. Thanks

 

[Walone]

Hi looking for some advice.

I've installed my alpine 8 inch subwoofer with build in amp today. I've connected the rca to speaker wires left and right front as shown in picture. Not sure if I should of connected them to rear speakers as don't seem to be getting much bass out of them when adjusting the gain on wired control panel. It doesn't state front or rear connection in manual so not sure what wrong as sub had lots more base in my old mk2 leon. Thanks

If you have the 8 speaker system (8RM) those pins are for the front pillar tweeters, you need to tap into the wires on pins 9+ (which should be brown/green) and pin 13-- (should be brown/blue) they are for drivers door bass/mid speaker, and pins 10+ (should be brown/black) and pin 14-- (should be brown/red) they are for passenger door bass/mid speaker. (speaker locations are assuming R/H/D)

 

[jjsmith72]

If you have the 8 speaker system (8RM) those pins are for the front pillar tweeters, you need to tap into the wires on pins 9+ (which should be brown/green) and pin 13-- (should be brown/blue) they are for drivers door bass/mid speaker, and pins 10+ (should be brown/black) and pin 14-- (should be brown/red) they are for passenger door bass/mid speaker. (speaker locations are assuming R/H/D)

Thanks for your reply.

Yes I have 8 speaker system. 4 door speakers 4 tweeters. I don't see pins 9,10,13,14 I just have 1-8 wires on brown connector. If those 4 pins in middle of the brown connector are front tweeters wires where are my front door wires on quadlock?

 

[Wastedagen]

Hi looking for some advice.

I've installed my alpine 8 inch subwoofer with build in amp today. I've connected the rca to speaker wires left and right front as shown in picture. Not sure if I should of connected them to rear speakers as don't seem to be getting much bass out of them when adjusting the gain on wired control panel. It doesn't state front or rear connection in manual so not sure what wrong as sub had lots more base in my old mk2 leon. Thanks

You mentioned you are connecting your rca to these wires. Rca is low level speaker input... My kenwood subs have both high level and low level inputs.
So connecting to speaker cable I use high level input...

Rca needs to come from a dedicated low level rca socket on the back of a stereo.

You can get high level to low level adaptor. Then connect your rca to this...

Sorry I'm not a car ICE expert... This is what I understand.... Please can someone elebortate or correct me... Thanks....

 

[jjsmith72]

You mentioned you are connecting your rca to these wires. Rca is low level speaker input... My kenwood subs have both high level and low level inputs.
So connecting to speaker cable I use high level input...

Rca needs to come from a dedicated low level rca socket on the back of a stereo.

You can get high level to low level adaptor. Then connect your rca to this...

Sorry I'm not a car ICE expert... This is what I understand.... Please can someone elebortate or correct me... Thanks....

The sub/amp is alpine swe-815 which has small amp bulid in on the top of sub. You can have rca connection or male rca to speaker wires which is what I have and connected them to the 4 middle wires on brown connector. Walone said they are the front pillar tweeters and I need to connect to pins 9,10,13,14 but don't have these on my quadlock. I've recently upgrade my unit from 5inch cd and just noticed those pins are missing from the connector on back unit and it's says 4 channel system. The upgraded unit has pins 9,10,13,14 on connector shown in photos.

Clearly my old unit must have speakers and tweeters connected on the 8 wires on brown connector.

 

[jjsmith72]

If you have the 8 speaker system (8RM) those pins are for the front pillar tweeters, you need to tap into the wires on pins 9+ (which should be brown/green) and pin 13-- (should be brown/blue) they are for drivers door bass/mid speaker, and pins 10+ (should be brown/black) and pin 14-- (should be brown/red) they are for passenger door bass/mid speaker. (speaker locations are assuming R/H/D)

I upgraded from a 5f0035869a MIB 5 inch cd unit to 5QA035858 Mib2 STD Nav. (Retrofit)

From what I understand now my old unit had 4 channels and only the 8 wires on brown connector which looks like it connects to all 4 speakers and tweeters. pins 9,10,13,14 are missing on old unit hence 4 channels.

On the 5QA035858 Mib2 unit I see it has the pins 9,10,13,14. So this might explain why my front speakers don't have much bass on this unit as those 4 pins in middle are for front tweeters on Mib2 unit and front speakers/tweeters on my old unit are using same 4 wires.

So am I right in thinking if I move the 4 middle wires from brown connector to pins 9,10,13,14 this may solve my bass problems front speakers and sub may work properly? As I don't have the 4 wires (9,10,13,14) on my quadlock clearly my speaker wiring set up is different because of my original unit.

First photo is 5QA035858 unit and second photo is my original 5F0035869A unit showing pins 9,10,13,14 missing.

 

[Wastedagen]

The sub/amp is alpine swe-815 which has small amp bulid in on the top of sub. You can have rca connection or male rca to speaker wires which is what I have and connected them to the 4 middle wires on brown connector. Walone said they are the front pillar tweeters and I need to connect to pins 9,10,13,14 but don't have these on my quadlock. I've recently upgrade my unit from 5inch cd and just noticed those pins are missing from the connector on back unit and it's says 4 channel system. The upgraded unit has pins 9,10,13,14 on connector shown in photos.

Clearly my old unit must have speakers and tweeters connected on the 8 wires on brown connector.

Oh OK, I too have the m1b (5f0) unit but mines slightly different....I have 8 speakers... Hence 8 pins...

 

[jjsmith72]

Oh OK, I too have the m1b (5f0) unit but mines slightly different....I have 8 speakers... Hence 8 pins...

I have 5qA035858 Mib2 unit now but my speakers/tweeters are on the 8pins. On this 5QA unit 4 middle pins on brown connector are front tweeter connection.

where my old unit 5F0 the same 4 middle pins shared front speakers/tweeters so this explains why my front speakers don't have much bass and sub not putting out hardly anything.

So from what I understand on 5QA mib2 unit the front speaker connections are pins 9,10,13,14 on the unit.

 

[Walone]

I upgraded from a 5f0035869a MIB 5 inch cd unit to 5QA035858 Mib2 STD Nav. (Retrofit)

From what I understand now my old unit had 4 channels and only the 8 wires on brown connector which looks like it connects to all 4 speakers and tweeters. pins 9,10,13,14 are missing on old unit hence 4 channels.

On the 5QA035858 Mib2 unit I see it has the pins 9,10,13,14. So this might explain why my front speakers don't have much bass on this unit as those 4 pins in middle are for front tweeters on Mib2 unit and front speakers/tweeters on my old unit are using same 4 wires.

So am I right in thinking if I move the 4 middle wires from brown connector to pins 9,10,13,14 this may solve my bass problems front speakers and sub may work properly? As I don't have the 4 wires (9,10,13,14) on my quadlock clearly my speaker wiring set up is different because of my original unit.

First photo is 5QA035858 unit and second photo is my original 5F0035869A unit showing pins 9,10,13,14 missing.

Oh that does complicate matters, I'm not home for a few days otherwise I would check the wiring diagrams for the various MIB units.
Can you confirm that you have tweeters in the front 'A' pillars and separate tweeters mounted in the rear doors (if 5 door car) and can you hear sound coming from them?

 

[jjsmith72]

Oh that does complicate matters, I'm not home for a few days otherwise I would check the wiring diagrams for the various MIB units.
Can you confirm that you have tweeters in the front 'A' pillars and separate tweeters mounted in the rear doors (if 5 door car) and can you hear sound coming from them?

The car is 5 door seat leon tdi fr 2014. It has tweeters in the front pillars and separate tweeters in rear doors and hear sound from them.

What I believe is my old 5f0035869a only had 8 pins 1-8 and no actual pins on 9,10,13,14. So looks like 4 speakers and 4 tweeters all on the 8 wires on brown connector.

With this new 5qa035858 unit it has 9,10,13,14 pins which I think is front speakers. As you've said the 4 middle pins on brown connector are tweeters so with my wiring the front speakers and pillar tweeters are those 4 wires. Do you think if I was to move the 4 middle wire to pins 9,10,13,14 on quadlock it would resolve the issue? There's hardly much bass on front speakers and think it's because the middle pins are for tweeters only on this unit

 

[Walone]

The car is 5 door seat leon tdi fr 2014. It has tweeters in the front pillars and separate tweeters in rear doors and hear sound from them.

What I believe is my old 5f0035869a only had 8 pins 1-8 and no actual pins on 9,10,13,14. So looks like 4 speakers and 4 tweeters all on the 8 wires on brown connector.

With this new 5qa035858 unit it has 9,10,13,14 pins which I think is front speakers. As you've said the 4 middle pins on brown connector are tweeters so with my wiring the front speakers and pillar tweeters are those 4 wires. Do you think if I was to move the 4 middle wire to pins 9,10,13,14 on quadlock it would resolve the issue? There's hardly much bass on front speakers and think it's because the middle pins are for tweeters only on this unit

The only problem I can see there is that because I think there is an internal crossover system in the MIB unit you would not get the high tones output from pins 9,10,13 and 14. I think it would be better if you could find where the wires split to go to the tweeters and wire them directly to pins 2,6,3 and 7, not an easy job!
I suppose you could try what you suggested and see what it sounds like, I also think there would be errors shown up on any VCDS scans.

 

[jjsmith72]

The only problem I can see there is that because I think there is an internal crossover system in the MIB unit you would not get the high tones output from pins 9,10,13 and 14. I think it would be better if you could find where the wires split to go to the tweeters and wire them directly to pins 2,6,3 and 7, not an easy job!
I suppose you could try what you suggested and see what it sounds like, I also think there would be errors shown up on any VCDS scans.

No don't it would an easy job as probably got yo take the dashboard after to find where wires split. I might try what I've suggested, got nothing to lose. If there's crossovers on front speakers to pillar tweeters surely it would sound the same?

I'm enjoying the upgrade from the 5 inch cd unit mib to the mib2 with 6.5 screen but not enjoy the current sound.

 

[Walone]

No don't it would an easy job as probably got yo take the dashboard after to find where wires split. I might try what I've suggested, got nothing to lose. If there's crossovers on front speakers to pillar tweeters surely it would sound the same?

I'm enjoying the upgrade from the 5 inch cd unit mib to the mib2 with 6.5 screen but not enjoy the current sound.

I'm sure the crossover network is internal on the MIB unit, hence when used in correct setup the tweeter outputs are separate to the bass/mids on the front speakers and when configured for Seat Sound it's different again.

 

[jjsmith72]

I'm sure the crossover network is internal on the MIB unit, hence when used in correct setup the tweeter outputs are separate to the bass/mids on the front speakers and when configured for Seat Sound it's different again.

Oh I see, so probably will sound crap if I move the 4 pins over then but will try. Can't sound any worse than it is now on front speakers just sounds like I've got 4 tweeters in the front. I currently have green/brown in +2 and blue/brown in -6. Red/brown in +3 and black/brown in -7. Which pins do they go in on 9,10,13,14?

This doesn't sound any better then maybe I will have to cut but pillar tweeters and add some fresh wire and connect them into pins 2,6,3,7

 

[Walone]

The green/brown should go to pin 9+, the blue/brown to 13-- , the red/brown to 10+ and the black/brown to 14--, those positions should be correct for your car.
On cars fitted as standard with MIB2 (8RM) units with all the pins used the colours are swapped over on pins 10 and 14 but you should not do this.

 

[jjsmith72]

The green/brown should go to pin 9+, the blue/brown to 13-- , the red/brown to 10+ and the black/brown to 14--, those positions should be correct for your car.
On cars fitted as standard with MIB2 (8RM) units with all the pins used the colours are swapped over on pins 10 and 14 but you should not do this.

That's for where pins go. Just an idea do you think coding with vcds to change pins so it's front speakers and tweeters would work like my old unit? Also in your opinion would you try find the where tweeter wires split or just cut into them at pillar and add fresh wires and run them through to Quadlock?

 

[Walone]

That's for where pins go. Just an idea do you think coding with vcds to change pins so it's front speakers and tweeters would work like my old unit? Also in your opinion would you try find the where tweeter wires split or just cut into them at pillar and add fresh wires and run them through to Quadlock?

I'm not sure whether they could be coded to do that, sorry.
It would probably be easier to run the wires from the pillar area, if I was at home I would look at the wiring diagrams to try and see where they split.
I suspect that they split somewhere near to the 'A' posts as the wiring goes from there to the door speakers and the tweeters.
Have a look at the diagram for centre speaker here it may help you. https://www.seatcupra.net/forums/th...spanish-forum-has-done-it.421193/post-4930063

 

[jjsmith72]

I'm not sure whether they could be coded to do that, sorry.
It would probably be easier to run the wires from the pillar area, if I was at home I would look at the wiring diagrams to try and see where they split.
I suspect that they split somewhere near to the 'A' posts as the wiring goes from there to the door speakers and the tweeters.
Have a look at the diagram for centre speaker here it may help you. https://www.seatcupra.net/forums/th...spanish-forum-has-done-it.421193/post-4930063

I will have a look behind the pillars tomorrow and see if I can see where wires split but yeah it's probably better to run new wires from pillars.

If you get a chance when your back home to have a look at wiring diagram that would be great.

I've looked at the link you sent me and I can see tweeters are different colour wires but this may now be the case for mine. Why does 10,14 wires switch round from bottom to top?

Sorry was looking at the front speakers wiring. I can see that centre speaker wiring has front speakers/tweeters pared up on same wires like my wiring is for front. What would happen with 10,14 pins.

 

[Walone]

I will have a look behind the pillars tomorrow and see if I can see where wires split but yeah it's probably better to run new wires from pillars.

If you get a chance when your back home to have a look at wiring diagram that would be great.

I've looked at the link you sent me and I can see tweeters are different colour wires but this may now be the case for mine. Why does 10,14 wires switch round from bottom to top?

Sorry was looking at the front speakers wiring. I can see that centre speaker wiring has front speakers/tweeters pared up on same wires like my wiring is for front. What would happen with 10,14 pins.

I won't be home until Sunday at the earliest. As for the change in the wire colours on 10,14 I don't know why but that is how it is on my car (PR code 8RM).
I don't quite know what you mean by what would happen to 10,14 pins, but that diagram is only for cars with Seat Sound (10 speakers, PR code 9VD).

I've had a thought!!! I seem to remember that there are several options for speaker configurations in VCDS coding, I think there is 8 speakers Active which i think may mean active internal crossover, and 8 speakers passive which i think may mean no internal crossover but that is only a guess, that setting may be suitable for your car, thereby not using pins 9, 10, 13 and 14.

 

[jjsmith72]

I won't be home until Sunday at the earliest. As for the change in the wire colours on 10,14 I don't know why but that is how it is on my car (PR code 8RM).
I don't quite know what you mean by what would happen to 10,14 pins, but that diagram is only for cars with Seat Sound (10 speakers, PR code 9VD).

I've had a thought!!! I seem to remember that there are several options for speaker configurations in VCDS coding, I think there is 8 speakers Active which i think may mean active internal crossover, and 8 speakers passive which i think may mean no internal crossover but that is only a guess, that setting may be suitable for your car, thereby not using pins 9, 10, 13 and 14.

Ok no problem when ever you have time to have a look. I've realised that it's not same as my current wiring so not sure why I asked about 10,14 pins.

Do you think I can get my mib2 std nav unit speaker configuration changed to match my current cars wiring so that othe unit will put bass and treble through the 4 pins in middle? It would solve the problems I have big time.

I have vcds and cable tool so if I could be given rhe coding I'd give it ago