c101 and x20 wire diagram (e30 M50 adapter)

[Jason89i]

like i said in a previous post, i already ordered the diagrams, .

you should be set. grab some graph paper and go to town.

this should be all i need to get the adapter correct and hopefully start the car or give me some suggestions to getting it started.

keep us updated. i like to know the solutions to problems.

also, you mentioned your c101 pin20 is R/YL ......and you state its an 89is. ive only seen that on 1990+ cars. so, you may want to verify year of diagrams / your wiring at c101. (that R/YL wire needs special attention, but it only shows up on the 1990+ diagrams as the wiring is different.)

cheers.
drive on.
jason

[The Fast One!]

yeah thats fine with me if they didn't post the diagrams.


but i had NO clue that those diagrams were right there on ebay.
like i said in a previous post, i already ordered the diagrams, thanks a lot. this should be all i need to get the adapter correct and hopefully start the car or give me some suggestions to getting it started.

[Jason89i]

You'll be disapointed mikey. I already have the e36 and e34 ETM. It wont show you what you are looking for.

it shows everything you need. you just have to know how to read the diagrams.

for instance.....the wiring diagrams show a wire coming from the temp gauge, going through a connector, and into the sender. the wiring diagram shows what color the wire is (usually labeled BN/VI for brown wire / violet stripe.) and......IMPORTANT.......the wiring diagrams also label ALL connectors the wires go through AND LABELS ALL the pin numbers.

like this...

. x20 (this is the connector)
--- 0)----- BN/VI (this is the wire / color)
. 2 (this is the pin number)

now you know connector (x20), pin number (2), wire color (brown wire w/ violet stripe), function, and what else its tied into.

i have found all the wiring info for c101 and x20 connectors.....not only do the diagrams tell me what they do, the will show you what else uses that signal, ground, or power. i have made a spreadsheet for all the conversions ive wired......ALL WERE DIFFERENT.....88is, 89i, 90m3, 86es, 90i, 91-318is. also have x20 on 94e34, 92e36, 94e36....only a few differences, nothing major.

i recommend to anyone doing a conversion......MAKE YOUR OWN SPREADSHEET. understand how the electrical systems work, what is looped together, what uses the same inputs......then if something goes wrong, hopefully you can fix it.

my only question is if people have this why don't they lend the information that is on the CD to make an adapter for people doing the swap?

the reason no-one emails the files around, is that they are 16-24mb pdf files for each year. besides, its under $20 off ebay.....but the e91-318is diagrams really stink, so you may need to grab a voltometer.


hope this helps
cheers, jason

[The Fast One!]

If it was easy, Treehouse couldn't charge $400 for an adapter.

that is so very true, my problem is i have a 94 engine harness with a e34 plug and 88 e30 plug and then my body plug should be a 89 but i guess for some reason it isn't.


i would figure that people would have the diagrams and could post them up for me instead of me not being able to start my car for the past month because of a little plug.

i'll probably end up buying the treehouse plug and then if the car still doesn't start take it to VACmotorsports and have them look at it since i'm out of time to work on the car. I can only work on it for so long each week now.

[The Fast One!]

You'll be disapointed mikey. I already have the e36 and e34 ETM. It wont show you what you are looking for.

i figured that much, it was only $16 shipped and has other stuf with it. so i'll still be happy with it.

[matt]

If it was easy, Treehouse couldn't charge $400 for an adapter.

[EtaSport]

You'll be disapointed mikey. I already have the e36 and e34 ETM. It wont show you what you are looking for.

[The Fast One!]

ok,

I had no clue those were out there.


went ahead and bought one of those 5 CD packs with everything up to 2001.
Hoefully this will give me the wire diagrams that i need.


my only question is if people have this why don't they lend the information that is on the CD to make an adapter for people doing the swap?

[The Fast One!]

you are giving us conflicting information.

you request wiring information for an 89 e30......but......the info you gave is for a 90+ airbag car.

go buy an ETM (electronic troubleshooting manual) off ebay. it has all the e30 / e34 / e36 wiring diagrams in pdf format. then make your own chart.

then, if something doesnt work, you will understand how the system works and will be able to figure it out.

cheers, jason

waffleswaffleswaffles the ETM have these the c101 and x20 for all years,



the info i gave was right off of my car. maybe the harness was switched at one point.

going to look for the ETM right now.

[Jason89i]

this is what I have for my e30's body side

20 red/yellow

you are giving us conflicting information.

you request wiring information for an 89 e30......but......the info you gave is for a 90+ airbag car.

go buy an ETM (electronic troubleshooting manual) off ebay. it has all the e30 / e34 / e36 wiring diagrams in pdf format. then make your own chart.

then, if something doesnt work, you will understand how the system works and will be able to figure it out.

cheers, jason

[The Fast One!]

this is what I have for my e30's body side

1 blue
2 blue/black
3 -----
4 brown/violet
5 black/brown
6 green/yellow
7 green
8 yellow/white
9 black
10 green/violet
11 white/blue
12 brown/black
13 red/violet
14 blue/yellow
15 black/green
16 white black
17 ------
18 black/yellow
19 ------
20 red/yellow

[The Fast One!]

addissimos chart seems right for the m50 side, but my m50 plug is different (not a huge problem since i can match pins) as well as my body side is different from that chart.

I need the chart for the e30 1989.

[EtaSport]

you never know mike considering you bought an e34 oil pan from him, e34 oil pump, and e34 pickup tube. Maybe he got the plug from an e34 too. Dont know how much different it is from an e36, Maybe you need to adapt it to the e36 harness if it really is an e34.

[The Fast One!]

SHIT


i just realized it looks like i have an e34 plug and NOT e36.

the guy said it was off of a non-vanos e36 but i will double check.

[The Fast One!]

acctually it looks like the brown/black wire gets used, its for oil level i have it hooked up to pin 2 on the m50 side,

would that cause my car to not start????

which makes me think of another question, what wires HAVE to be hooked u inorder to make the car start,
starter,fuel, ignition, alternator, any others???