I,ve been retro fitting the 13 button OBC today.
I,m left with 2 connectors at the glovebox end, one is a 2 Pin White Connector with a Blue and a Brown cable,this i think connects to the white connection block above the glovebox.It looks like there is a space available.
The other is a 4 Pin Green Connector which has GRN/RD,GRN,BRN and a BRN/YL cables.
There appears to be one Green Female Connector available,but it is already occupied.
Can anybody give me some advice,or even better a photograph?
I,ve looked at E30Adam,s Wiki on the subject and Bentley and Hayes are not much help.
Nick
OBC Connections
Moderator: martauto
-
E30cabalan
- E30 Zone Newbie

- Posts: 224
- Joined: Fri Jan 14, 2005 11:00 pm
- Location: South Wales
This may help, I removed this cable last night from my scrapper and also
photographed the connections if you are still stuck....
Main loom
”¢ Large yellow connector ”“ Back of instrument cluster
”¢ Larger green connector ”“ Back of OBC main unit
”¢ 2 x small green connectors ”“ Relay control module
”¢ Small black ”“ Audible gong
”¢ Small blue ”“ Remote indicator stalk
”¢ Brown wire with circular connector ”“ Earthing point behind glove box
”¢ 2 x small white connectors ”“ Control box behind glove box
”¢ Black circular connector ”“ connects to temp loom
Temp sensor loom
”¢ Blue plug ”“ Horn
”¢ Black circular plug ”“ Temp sensor
photographed the connections if you are still stuck....
Main loom
”¢ Large yellow connector ”“ Back of instrument cluster
”¢ Larger green connector ”“ Back of OBC main unit
”¢ 2 x small green connectors ”“ Relay control module
”¢ Small black ”“ Audible gong
”¢ Small blue ”“ Remote indicator stalk
”¢ Brown wire with circular connector ”“ Earthing point behind glove box
”¢ 2 x small white connectors ”“ Control box behind glove box
”¢ Black circular connector ”“ connects to temp loom
Temp sensor loom
”¢ Blue plug ”“ Horn
”¢ Black circular plug ”“ Temp sensor
-
Nick325
- E30 Zone Regular

- Posts: 317
- Joined: Mon Jan 10, 2005 11:00 pm
- Location: Washington Tyne & Wear
Thanks for the replies.
Alex,yes i have the 'restoration bible'.
It looks like the white connector with blue/brown connections is for the temp sensor.
That still leaves me with the 4 pin green connector grn/rd,grn,brn,and brn/yl wires.
Not sure what thats for.
Nick
Alex,yes i have the 'restoration bible'.
It looks like the white connector with blue/brown connections is for the temp sensor.
That still leaves me with the 4 pin green connector grn/rd,grn,brn,and brn/yl wires.
Not sure what thats for.
Nick
- Brianmoooore
- E30 Zone Team Member

- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
Green/red and green are the immobiliser loop, the brown is an earth, and the brown/yellow is the alarm horn. You are missing the front section of the loom, which has another plug for the green and green/red.
-
poolnoodle
- E30 Zone Squatter

- Posts: 1786
- Joined: Sat May 24, 2008 11:00 pm
- Location: Hobart, Tasmania, Australia
I never connected the immobiliser part of my OBC as it is pretty pointless. Will work fine without it
'83 Bronzit 323i (mmmm, chrome)
'74 Polaris 2002 (mmmm, retro)
'89 Delphin 535i (mmmm, waft waft)
'74 Polaris 2002 (mmmm, retro)
'89 Delphin 535i (mmmm, waft waft)

