Upgrading! - Page 2

mccabema · #11 04-02-2007, 06:19 AM

Excellent

Thank you KiwiJochen, its all much clearer now. One or two more things and then I'll leave you in peace

Quote:

Originally Posted by kiwijochen

No. X18802 on the on-board monitor (A196) carries the RGB video signals and power and ground for the LCD display. It connects directly to the blue plug X1313 on the nav computer (A112). **It is exactly this cable that you don't have**

Apologies, this was a typo, I meant the white plug !

Quote:

Originally Posted by kiwijochen

The earth connection (X3279) will join the earth strap along with the existing harness?
This is existing and does not need to be changed.

By this I mean that the earth strap from the new harness will join the existing one. Am I better of leaving it off?

Quote:

Originally Posted by kiwijochen

I recommend you do the following:

1. Remove and discard GPS receiver, and associated wiring loom. Some unwrapping may be required.

Understood

Quote:

Originally Posted by kiwijochen

2. Obtain and fit connector X18802 + associated cabling back to nav computer. Remove the cabling and pins from the loom you obtain, and insert into the X1313 connector housing. All other nav signals are present, and remain required. Do not change them! This is the only cable loom you need to run from front of vehicle to back.

Are you saying that there are some cables going to the existing X1313 blue connector on the navigation computer that need to remain in place? Therefore its not a case of simply removing the exsisting harness plug and replacing it with the new one?

Are you saying to remove the X1313 connector from the new harness and wire it to the relevant pins (7,16,5,14,6,15,12,1,3) on the existing harness connector, thus leaving the original conector and some of the original wiring in place?

Quote:

Originally Posted by kiwijochen

3. Obtain connector X18801. Remove the corresponding wires from your existing radio-nav headunit, and insert into appropriate pins in X18801.

This confuses me slightly ! Connector X18801 is the blue plug that is currently connected to my old mono headunit. This plug will connect to the blue socket on the new widescreen display.

What you are saying suggests that I need to re-wire this connector. Is it not plug and play?Perhaps you could explain what you mean. I have no drawing of my old navigation so I have no idea how any of the existing cables are wired. I'm working under the assumption that my existing harness has the blue plug (X18801) wired to the Radio module in the same way the new widescreen necessitates.

Quote:

Originally Posted by kiwijochen

Fit PL wire from new loom. PL (LCD brightness control) will be the only missing wire.

This is simply a cable going from pin 12 on X18801 to pin 12 on X18802 right ?

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KiwiJochen · #12 04-02-2007, 06:41 AM

Quote:

Originally Posted by mccabema

By this I mean that the earth strap from the new harness will join the existing one. Am I better of leaving it off?

If you look at the cabling you need, no eart wire is required.

Quote:

Originally Posted by mccabema

Are you saying that there are some cables going to the existing X1313 blue connector on the navigation computer that need to remain in place? Therefore its not a case of simply removing the exsisting harness plug and replacing it with the new one?

X1313 currently has these signals:
Ibus pin 3
Terminal30 (battery) pin 1
NAV_NF+ (voice) pin 9
NAV_NF- (voice gnd) pin 18
Terminal31 (gnd) pin 10
Terminal31 (gnd) pin 11

You need to retain all of these signals and add
VMLC31 (monitor gnd) pin 12
RGB signals

So leave the existing wiring attached, and just fit the 3 x video signals and the monitor ground

Quote:

Originally Posted by mccabema

Are you saying to remove the X1313 connector from the new harness and wire it to the relevant pins (7,16,5,14,6,15,12,1,3) on the existing harness connector, thus leaving the original conector and some of the original wiring in place?

Leave ALL existing wiring in place.
The mono-nav is a subset of the colour nav. You NEED all the existing wiring. You only need to ADD the RGB signals (and respective wires).

Quote:

Originally Posted by mccabema

This confuses me slightly ! Connector X18801 is the blue plug that is currently connected to my old mono headunit. This plug will connect to the blue socket on the new widescreen display.

What you are saying suggests that I need to re-wire this connector. Is it not plug and play?Perhaps you could explain what you mean. I have no drawing of my old navigation so I have no idea how any of the existing cables are wired. I'm working under the assumption that my existing harness has the blue plug (X18801) wired to the Radio module in the same way the new widescreen necessitates.

I cannot confirm the wiring of the connector on the radio-nav unit, it is missing in the WDS. So you will need to document the plug (wire colours, pin numbers) and then compare to the retro-fit diagram. You may find everything is correct, and in the right place.

Quote:

Originally Posted by mccabema

This is simply a cable going from pin 12 on X18801 to pin 12 on X18802 right ?

Yes, the LCD brightness control (PL, black wire) is a single wire from the blue plug to the white plug of the bordmonitor. As per the retrofit instructions.

What you are doing is simple. You are tending to over-complicate matters.

Remember: what you have is a subset of what you need. No existing wiring needs to be removed. You only need to ADD wiring.

Jochen

mccabema · #13 04-02-2007, 07:23 AM

Thanks Jochen,

I am just trying to be sure I understand rather than finding out later that I've mis-understood something you've said.

Forgive me if this leads to confusion and what may seem as over complication.

I make it that pins 5,6,7 carry the video signal so it will be a case of adding these and also pin 12?

Thanks so much for all your help and re-assurance. You've been an invaluable help to me since I started investigating this last Friday.

Some people have the right intention, but boy do they get it wrong when it comes to giving advice!

I'll let you know how I get on.

Thanks again

M

KiwiJochen · #14 04-02-2007, 07:34 AM

Quote:

Originally Posted by mccabema

I make it that pins 5,6,7 carry the video signal so it will be a case of adding these and also pin 12?

Video:

X1313 blue connector on nav computer
VMR = pin 7, shield = pin 16
VMG = pin 5, shield = pin 14
VMB = pin 6, shield = pin 15

mccabema · #15 04-02-2007, 07:41 AM

Excellent

I know what I'm doing now from start to finish !! Off to the dealer to see what cable I can get.

Thanks Jochen

U d man

gkoutsis · #16 04-03-2007, 08:35 AM

When I was looking for my bimmer, I found one which had the same NAV you have.

I did my research and I come up with the following results.

There are two versions of the MK2. The early one has the same plugs and wiring as the MK1. This is a problem as you need to buy a convertor for the plus. Later MK2s have the same wiring as the mk3 and mk4.

The 16:9 has different plug on the back so I found a complete wiring kit for MK4/16:9 on german ebay for 150 euros shipped. Do a search and you will find a lot of sellers selling them.

The cheapest 16:9 display I found on ebay come from a guy in Lithuania.

The MK4 I found in Germany.

Also make sure you have the BM54 tuner as well.

mccabema · #17 04-03-2007, 04:00 PM

Quote:

Originally Posted by gkoutsis

There are two versions of the MK2. The early one has the same plugs and wiring as the MK1. This is a problem as you need to buy a convertor for the plus. Later MK2s have the same wiring as the mk3 and mk4.

Lucky for me, it has the newer plugs but yes, no big deal to get the convertor.

Quote:

Originally Posted by gkoutsis

The 16:9 has different plug on the back so I found a complete wiring kit for MK4/16:9 on german ebay for 150 euros shipped. Do a search and you will find a lot of sellers selling them.

My local parts guy has given me one for 180 Euro so rather than going through eBay, I took it from him. He ordered it as a stock item, which takes a day longer, but means we have more chance of returning it should it not be what I want.

Quote:

Originally Posted by gkoutsis

The cheapest 16:9 display I found on ebay come from a guy in Lithuania.

The MK4 I found in Germany.

I went through www.bimmernav.com for both.

Quote:

Originally Posted by gkoutsis

Also make sure you have the BM54 tuner as well.

I have a RDS Business radio module (Part No.65126901348) which is exactly the same as a BM54...I hope !! Anyone know any different ??