-B5 2.7T to B6 A4 Wiring guide
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In the proccess of creating a wiring harness[->2] for my swap and figured this could be useful to other's its almost complete and I'm hoping to have the gurus go through and check my table.

USE AT YOUR OWN RISK- FOR 1.8T
STILL NEED 3.0 INFO

This information was pieced together using AudiA4_20T's thread http://www.audizine.com/forum/showth...ness-Explained[->3]

and dus post found http://www.audizine.com/forum/showth...=1#post8134799[->4] his is a 2.7T AJK, which has so far had quite a few discrepancies with the diagrams i have for the APB

B5 A6/S4 2.7T Engine Harness[->5]|B6 A4 1.8T Engine Harness[->6]|Notes|
T15 WHITE Pin5 grey|T17e WHITE Pin1 brown/green|done|
T15 WHITE Pin2 yellow/Violet|T17e WHITE Pin2 yellow/violet|done|
T15 WHITE Pin3 brown/red|T17e WHITE Pin3 brown/red|done|
T15 WHITE Pin1 yellow/blue|T17e WHITE Pin4 yellow/blue|done|
T15 WHITE Pin4 grey/yellow|T17e WHITE Pin5 grey/yellow|done|
T15 WHITE Pin6 brown/green|T17e WHITE Pin6 brown|done|
T15 WHITE Pin10 black/white|T17e WHITE Pin10 blue/green|done|
T15 WHITE Pin11 red/black|T17e WHITE Pin11 red/black|done|
T15 WHITE Pin12 white/red|T17e WHITE Pin12 white/red|done|
T15 WHITE Pin13 red/green/grrey|T17e WHITE Pin13 red/green/rey|done|
T3au RED Pin2 violet/blue|T17d RED Pin6 violet/blue|THIS IS AN AIR BAG CONNECTION done|
T15m RED Pin14 orange/brown|T17d RED Pin13 orange/brown|done|
T15m RED Pin15 orange/black|T17d RED Pin14 orange/black|done|
T10 BROWN Pin4 red/black|T10a BROWN Pin4 red/black|done|
T10 BROWN Pin1 green/black|T10a BROWN Pin6 green/red|done|
T10 BROWN Pin8 black/red|T10a BROWN Pin2 black/red|done|
T10 BROWN Pin9 red/green/grey|T10a BROWN Pin9 red/green/ grey|done|
T10ar ORANGE Pin1 red/green/grey|T17e WHITE Pin16 red/green/grey| done|
T10ar ORANGE Pin8 green/yellow|T10a BROWN Pin8 green/yellow|done|
T10ar ORANGE Pin5 black/blue|T17e WHITE Pin15 black/violet/blue|*1 need done know|
T10m BLACK Pin1 blue|T10 BLACK Pin1 Blue|not sure|
T10m BLACK Pin3 white/green/grey|T10 BLACK Pin3 white/green/grey|done|
T10m BLACK Pin5 brown/yellow|T10 BLACK Pin6 brown/yellow|done|
T10m Black Pin7 blue/yellow|T10 BLACK Pin7 blue/yellow|done|
T10m BLACK Pin8 red/blue|T17d RED Pin10 red/blue|done|
T10m BLACK Pin9 blue/brown|T10 BLACK Pin9 blue/brown|done|
T10m BLACK Pin10 brown/red|T10 BLACK Pin10 brown/red|Not on 2003+on 2002 3.0 done|

notes:

*1 - 3.0 vs 1.8T
a)A4 3.0 positive manage line to j271[->7] relay which get 12v from the line with the nut in plenum chamber, to T10ar ORANGE A6 connector Pin5 black/blue to D52 line via 20A fuse
(taken from AudiA4_20T build thread post 696)

b)A4 1.8T it is directly T10ar ORANGE Pin black/blue to T10n T17e WHITE Pin15 black/violet
Additional Connections:

Run from the plug you adapted to the 2.7T harness 1) 12v+ post 30(nut in plenum chamber) to ecu pin 62 red (T10m BLACK pin4 red on 2.7T plug)

2) T17e WHITE Pin14 grey/white - T9 Brown Pin6 brown/white (connector is on the back of the starter interlock relay)

3) T17d RED Pin5 blue/brown - to A/C Compressor[->8] (Assuming ground one side of the plug on the compressor and the other goes to T17d/5)
a)Side note also need to jump this to the coolant fan relay to turn on when a/c is on so it actually blows cold air.
4) Vehicle Speed Sensor 5k limit
a) A4 1.8T 2002 - T10 brown pin3 white/blue(2.7T plug) to T10 black pin10 brown/red(1.8T plug)

b) A4 1.8T 2003+ - Run a wire from T17b GREEN (in the kick panel drivers footwell) Pin17 white/blue to T10 brown Pin3(2.7T plug), I suggest a quick disconnect for easy harness removal
UPDATED* thanks to AudiA4_20T

If You can provide the different connections for the 3.0 as well as avant please post

Additional Notes
Originally Posted by Bische showthread.php?p=10089375showthread.php?p=10089375
One more tip for people doing swaps: Pay close attention to HOW the ECU is powered, it varies between applications.

Also, the J17 is not just a fuel pump relay[->9] - it is a fuel deliver relay as it powers the fuel pump/injectors/MAF. This is done as a safety precaution, and different conditions(like airbag = blown) is prohibiting J17 triggering. Again, this also varies from applications and will likely cause confusion.

[->0] - register.php
[->1] - usercp.php
[->2] - http://www.bizrate.com/awiring-harness/index__af_assettype_id--4__af_creative_id--3__af_id--[AFF-ID]__af_placement_id--[AFF-PLACEMENT-ID].html
[->3] - http://www.audizine.com/forum/showthread.php/425744-The-1-8T-Wiring-Harness-Explained
[->4] - http://www.audizine.com/forum/showthread.php/486284-The-Official-B6-2-7T-DIY-Swap-Guide?p=8134799&viewfull=1
[->5] - http://viglink.pgpartner.com/rd.php?r=402&m=978364545&q=n&rdgt=1416139627&it=1416571627&et=1416744427&priceret=217.82&pg=~~3&k=32ff2ee872dc2eaa2a0c1ec6a49983d3&source=feed&url=http%3A%2F%2Fwww%2Eamazon%2Ecom%2Fdp%2FB003EOXBP0%2Fref%3Dasc%5Fdf%5FB003EOXBP03409016%3Fsmid%3DATVPDKIKX0DER%26tag%3Dpg%2D46%2D01%2D20%26linkCode%3Ddf0%26creative%3D395097%26creativeASIN%3DB003EOXBP0&st=feed&mt=~~~~~~~~n~~~
[->6] - http://viglink.pgpartner.com/rd.php?r=402&m=978364545&q=n&rdgt=1416139627&it=1416571627&et=1416744427&priceret=217.82&pg=~~3&k=32ff2ee872dc2eaa2a0c1ec6a49983d3&source=feed&url=http%3A%2F%2Fwww%2Eamazon%2Ecom%2Fdp%2FB003EOXBP0%2Fref%3Dasc%5Fdf%5FB003EOXBP03409016%3Fsmid%3DATVPDKIKX0DER%26tag%3Dpg%2D46%2D01%2D20%26linkCode%3Ddf0%26creative%3D395097%26creativeASIN%3DB003EOXBP0&st=feed&mt=~~~~~~~~n~~~
[->7] - http://stat.dealtime.com/DealFrame/DealFrame.cmp?bm=271&BEFID=96477&acode=281&code=281&aon=&crawler_id=1932216&dealId=g7OR0yrUmLhX-YhreAaSGQ%3D%3D&searchID=&url=http%3A%2F%2Frover.ebay.com%2Frover%2F1%2F711-57618-1854-0%2F2%3Fkwid%3D1%26mtid%3D570%26crlp%3D1_240251%26linkin_id%3D%7Blinkin_id%7D%26sortbid%3D%7Bbidamount%7D%26fitem%3D171067018793%26mt_id%3D570%26mpre%3Dhttp%253A%252F%252Fwww.ebay.com%252Fitm%252Flike%252F171067018793%26mid%3D503280%26sdc_id%3D%7Bsdc_id%7D&DealName=Toyota%2096-02%204runner%2095-04tacoma%20Tundra%2096-98%20T100%205vzfe%20J271%20Timing%20Belt%20Ttb5v&MerchantID=503280&HasLink=yes&category=0&AR=-1&NG=1&GR=1&ND=1&PN=1&RR=-1&ST=&MN=msnFeed&FPT=SDCF&NDS=1&NMS=1&NDP=1&MRS=&PD=0&brnId=2455&lnkId=8070676&Issdt=141119050347&IsFtr=0&IsSmart=0&dlprc=10.0&SKU=171067018793
[->8] - http://motors.shop.ebay.com/i.html?_nkw=ac+compressor
[->9] - http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dautomotive&field-keywords=fuel%2Bpump%2Brelay