[s-cars] Need help with the 1.8t coil pack conversion

[Sean Douglas]

Dave:

I checked ETKA, thinking they may show the mating plug for the 4 pin
(4A0 906 234) that plugs into the POS but it does not.

My suggestion is to buy a matching set of 4 pin plugs from VW, that have
the little rubber grommets and has a seal on the inside to make it
waterproof and splice this in to the POS connector (cut it off).

For reference the p/n is

357 972 754 - flat connector housing
357 972 964 - flat connector housing

Plus you will need the pins that go on the inside;

000 979 133 - 1.0 mm dia wire
000 979 129 - 1.0 mm dia wire

As an aside, the pins come with a short piece of yellow wire crimped on,
but used to be available by themselves. I prefered using the pins and
crimping them on myself, this avoids using a butt connector and is much
neater. Someone posted a source for these pins, but I can't find it.

Sean


> -----Original Message-----
> From: s-car-list-bounces at audifans.com 
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Dave Forgie
> Sent: Monday, September 05, 2005 8:18 PM
> To: s-cars
> Subject: [s-cars] Need help with the 1.8t coil pack conversion
> 
> 
> As you may know, I am 'sperimentin'.  I have five 06B 905 
> 115L late model 1.8t coil packs (which are POS, coil and plug 
> connectors all in one), five 4B0 973 724  empty four wire 
> connectors (to mate to the 115Ls),  ten 000 979 133 A twp 
> female spade connector pig-tails, the S4 and 1.8t wiring 
> diagrams, lots of reasonably colour-coded wire and crossed fingers.
> 
> I am trying to do this completely plug and play (no cuttting 
> of any original wires).  I have solved the problem of the 
> coil power connectors (I will let you know the details later) 
> BUT I haven't been able to solve the POS connector problem 
> (yet).  This is where I need somebody's help.
> 
> I have figured out the wiring from the ECU to the N122 and 
> N127 POS units (Note:  The Bentley is wrong about  N127 for 
> cylinders 4 and 5). What I need is a four flat pin connector 
> to take the place of the POS connection so I can plug it into 
> the four pin connectors from the ECU. I hadn't really thought 
> about it before but the electrical system is inherently quite 
> safe.  Input power is carried in female electrical connectors 
> (in this case spade connectors)  that, in turn, are carried 
> in male plastic housings.  The powered device, e.g. the POS 
> units, have male spade connectors in a female plastic 
> housing.  So the power connectors are physically shielded by 
> plastic bits, which obviously makes shorting things out 
> difficult (but not impossible).  What I need is a four pin 
> connector with a female plastic housing with four male spade 
> connectors to mimic the POS.
> 
> I scoured a VW wrecking yard on Saturday (the Audi wrecker 
> was closed) and didn't find any suitable four pin connectors, 
> perhaps, because IF there were any, they would be powered 
> devices, not actual connectors.
> 
> My thoughts at this point include a) finding 2 dead POS units 
> and hacking them to relieve them of their 4 pin connector 
> housing (not pretty and no really very plug and play for 
> others to follow (if the whole thing works)) or b) buy some 
> male spade connectors, get the spacing correct by plugging 
> them into the POS-trigger signal connectors from the ECU 
> (ignition way off) and then "casting" them into epoxy (just 
> to fix the spacing).  The latter is more DYI but would 
> require two tie wraps to hold the result into connectors from the ECU.
> 
> I am open to other suggestions.  (I have talked to AMP by the 
> way - "restricted parts")
> 
> Remember these 1.8t coil all-in-one coil packs cost $30 each. 
>  (If this works, everybody will benefit).
> 
> Dave F.
> 
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