Difference between revisions of "C40x"

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The '''C404''' and '''C405''' plugs are the door connectors on the vehicle [[Loom]]. They allow the [[Doors|door]] wiring to be disconnected from the rest of the vehicle, so that the doors can be removed easily.  
 
The '''C404''' and '''C405''' plugs are the door connectors on the vehicle [[Loom]]. They allow the [[Doors|door]] wiring to be disconnected from the rest of the vehicle, so that the doors can be removed easily.  
  
−
The plugs on the A-pillar.  The C404 connector is for the right door and the C405 connector is for the left door. The male portion of each connector is on the cabin side of the vehicle, and the female portion of each connector is on the door side of the vehicle.  
+
The plugs on the A-pillar.  The C404 connector is for the right door and the C405 connector is for the left door. The male portion of each connector (the pins) is on the cabin side of the vehicle, and the female portion of each connector (sockets) is on the door side of the vehicle.  
  
 
Because the E30 was primarily designed for the domestic German and export US-markets, the wiring is designed around a driver seated on the left, and therefore the C405 plug carries more info than the C404. Where possible, C404 equivalents have been listed in the table.
 
Because the E30 was primarily designed for the domestic German and export US-markets, the wiring is designed around a driver seated on the left, and therefore the C405 plug carries more info than the C404. Where possible, C404 equivalents have been listed in the table.
  
−
Removal of the male portion of the connector is straight forward. Pull back the rubber boot to expose where the female portion of the connector connects to the male portion of the connector. Pull the female portion connector away from the male, then use a flat-head screw drive to release the three clips that hold the male portion of the connector to the cabin.
+
Removal of the male portion of the connector is straight forward. Pull back the rubber boot to expose where the female portion of the connector connects to the male portion of the connector. Pull the female portion connector away from the male, then use a flat-head screw drive to release the three clips that hold the male portion of the connector to the cabin. Remove the speaker cover in the footwell and the speaker itself, then fish around inside the A-pillar to get access to the C40x plug.
  
 
The wiring that passes through the C404 and C405 forms a key part of the [[Electrical|Electrical]] system.
 
The wiring that passes through the C404 and C405 forms a key part of the [[Electrical|Electrical]] system.
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|Tweeter
 
|Tweeter
 
|}
 
|}
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=Parts=
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If your pins are corroded and your plugs brittle, it's worth replacing the sockets and pins to ensure your locks and mirrors work as they should.
 +
 +
You can buy complete looms from BMW; however, for a fraction of the price and a few hours with some crimping pliers (no soldering required), you can strip and rewire your own plugs by ordering the following parts:
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{| border="1" cellpadding="5" cellspacing="0"
 +
!Item
 +
!Part Number
 +
!Quantity
 +
|-
 +
|C40x Female socket holder
 +
|61131375688
 +
|2
 +
|-
 +
|C40x Male plug
 +
|61131380587
 +
|2
 +
|-
 +
|C40x pin holder
 +
|61131375690
 +
|2
 +
|-
 +
|Pin
 +
|61131371605
 +
|33
 +
|-
 +
|Socket
 +
|61131371607
 +
|33
 +
|-
 +
|}
 +
 +
On the male side, the pin holder carries the main pins (5-22), which then clips into the male plug. The male plug also holds 4 pins of its own - pins 1-4.
 +
 +
You may find that the significant chunk of this cost is the individual pins and sockets. In case of price changes from BMW, it may be more economical to source these pins from a third party. In this case, you're looking for 1.6mm pins and sockets such as [http://mikrokoszalin.pl/konektor-1107960-meski-16mm-p-490138.html these] and [http://mikrokoszalin.pl/konektor-1107970-zenski-16mm-p-490139.html these].

Latest revision as of 20:53, 6 June 2015

The C404 and C405 plugs are the door connectors on the vehicle Loom. They allow the door wiring to be disconnected from the rest of the vehicle, so that the doors can be removed easily.

The plugs on the A-pillar. The C404 connector is for the right door and the C405 connector is for the left door. The male portion of each connector (the pins) is on the cabin side of the vehicle, and the female portion of each connector (sockets) is on the door side of the vehicle.

Because the E30 was primarily designed for the domestic German and export US-markets, the wiring is designed around a driver seated on the left, and therefore the C405 plug carries more info than the C404. Where possible, C404 equivalents have been listed in the table.

Removal of the male portion of the connector is straight forward. Pull back the rubber boot to expose where the female portion of the connector connects to the male portion of the connector. Pull the female portion connector away from the male, then use a flat-head screw drive to release the three clips that hold the male portion of the connector to the cabin. Remove the speaker cover in the footwell and the speaker itself, then fish around inside the A-pillar to get access to the C40x plug.

The wiring that passes through the C404 and C405 forms a key part of the Electrical system.

C404

Pin

Colour Function To Image
1 Blue/Black Electric Mirror Mirror Motor C404.jpg
2 Blue/White Electric Mirror Mirror Motor
3 White/Black Electric Mirror Clutch Solenoid
4 Brown Electric Window switch Ground G200
5
6
7
8
9 Blue Central Locking Door Locking Motor - lock
10 White Central Locking Door Locking Motor - unlock
11 Yellow/Blue Central Locking Microswitch - Lock
12 Green/Blue Central Locking Microswitch - Unlock
13 Violet/Blue Electric Windows
14 Black/Blue Electric Windows
15
16
17
18
19 Black Central Locking
20 Grey/Green Speakers Tweeter
21 Green/Yellow Speakers Tweeter


C405

Pin

Colour Function To Image
1 Green/Black Electric Mirror Fuse 19 C404.jpg
2 Brown Electric Window switch Ground G200
3 Red/Black Central Locking Fuse 27
4
5 Blue/Black Electric Mirror Mirror Motor
6 Blue/White Electric Mirror Mirror Motor
7 White/Black Electric Mirror Clutch Solenoid
8 Brown Ground
9 Blue Central Locking Door Locking Motor - lock
10 White Central Locking Door Locking Motor - unlock
11 Yellow/Blue Central Locking Microswitch - Lock
12 Green/Blue Central Locking Microswitch - Unlock
13 Violet Electric Windows
14 Black Electric Windows
15 Red/Black Central Locking Central Locking module
16 Brown/Blue Central Locking
17 Red/Brown Central Locking Inhibitor Switch
18 Green/White Interior Light Interior Light delay timer
19 Brown/Green Interior Light Door Handle switch
20 Grey/Green Speakers Tweeter
21 Green/Yellow Speakers Tweeter

Parts

If your pins are corroded and your plugs brittle, it's worth replacing the sockets and pins to ensure your locks and mirrors work as they should.

You can buy complete looms from BMW; however, for a fraction of the price and a few hours with some crimping pliers (no soldering required), you can strip and rewire your own plugs by ordering the following parts:

Item Part Number Quantity
C40x Female socket holder 61131375688 2
C40x Male plug 61131380587 2
C40x pin holder 61131375690 2
Pin 61131371605 33
Socket 61131371607 33

On the male side, the pin holder carries the main pins (5-22), which then clips into the male plug. The male plug also holds 4 pins of its own - pins 1-4.

You may find that the significant chunk of this cost is the individual pins and sockets. In case of price changes from BMW, it may be more economical to source these pins from a third party. In this case, you're looking for 1.6mm pins and sockets such as these and these.

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