Wiring in the different c101 plug

[Bristol_Jer]

Thought I might start a thread on this, so it's easy to find out how to get round using the loom with the 25 pin c101.



So far I have found this list, just need to confirm that this is right for an e34 m30 (list is for m50), and I'll sort it on my car taking some photos along the way

E34 M50 Tu E30

1/ blue/white (oil level, dynamic) 2/ green/yellow
2/ blue/yellow(oil level static) 10/ blue
3/ red/white (ABS supply) 20/ red/yellow
4/ black/blue (aircon)
5/ black/grey (aircon)
6/ purple/grey (aircon)
7/ black/purple (drive away sigle for E34 OBC)
8/ grey (engine fault) 12/ grey
9/ NC
10/ NC
11/ brown/yellow (water temp)
12/ brown/purple (water temp) 4/ brown/purple
13/ green/purple (fuel pump) 13/ green/purple
14/ black/white (speed to inst. cluster) 14/ black/white
15/ black/green (unloader relay) 15/ black/green
16/ white/yellow (Rx data)
17/ white/purple (Tx data)
18/ black/yellow (starter) 18/ black/yellow
19/ white/green (SI. reset) 11/ white/green
20/ black (engine speed to cluster) 9/ black
21/ Green (ignition) 7/ green
22/ green/white 6/ green/white
23/ brown/grey (oil pressure) 5/ brown/green
24/ white/black ( fuel rate to cluster) 8/ white black
25/ blue (ignition light) 1/ blue.
.
from this on an e30 pin 1 is ign light and pin 9 is tacho

[Bristol_Jer]

Finally got round to starting this!

M20 plug cut off, wires sorted out and ends bared:



More pics to come soon

[jimbom30cab]

Bristol Jer are you there?

I'm thinking of doing this so wanted to chat with you first but I lost your number, could you PM me mate?

Cheers

Jim

[jimbom30cab]

I've done a bit of research on the net and knocked this up

[jimbom30cab]

so the only one I have different is

3/ red/white (ABS supply) 20/ red/yellow

where I have

3 ABS (on the x25) going to 3 (on the e30 x20) not used

I think I am wrong and Bristol Jer is right

LOOK at the WIKI

WARNING: There is one difference in the C101 design between the E30s, and that is Pin 20. On early vehicles, Pin 20 is a brown earth wire, while for some later vehicles Pin 20 is a live, unfused red/yellow wire for the ABS system. If you are changing your engine, CHECK PIN 20 ON BOTH SIDES OF THE C101 PLUG before connecting the battery.

If you have a brown wire connected, cut it away from the pin, and make sure the free end can't come into contact with anything. If it is red/yellow, then leave it alone. Of course, if the body side of your C101 has a red/yellow wire on pin 20, and your new engine loom has nothing connected to this pin, you need to add a wire, capable of carrying about 15A, from either of the terminals marked '87' on the DME relay socket to pin 20 of the the C101 plug, otherwise your ABS braking system won't work.