Identify these connectors!

[2mAn]

Trying to un-fuq the E30 and I am trying to identify a bunch of various connectors.

Group 1 is behind the dash in the glovebox area.

This group sort-of looked like it would go behind the HVAC panel, but the blue connector should be for the Cruise Control Module, the others... no idea.


Pretty sure I have a few of these identified. 2 wires for glovebox light, rectangle connector for the flashlight, but the rest?...


Finally theres this. No clue at all. These wires/ connector are literally coming off the ECU!



Now we switch to under the hood. This group is on the passenger side. I believe the boot-ed 2 pin connector is for the coolant that would've gone on the side of the radiator IF mine had the original early model setup, but mine has the late model radiator and reservoir. The long-ish chewed up connector SHOULD be for the exterior temp sensor, yes?

Those 2 wires Im holding... no idea?... Notice anything else?




Now, switch to the driverside. Similar connector to the pass side, but theres a bridged connector too...

[zinc]

Good luck.

Interested in the general process for figuring this out. I assume cross reference with wiring diagrams and try remove anything that shouldn't be there.

I took a quick peak at the wiring under my dash and it's a horrendous mess of aftermarket alarms etc hacked in. Not even sure where to start so I'm just pretending I didn't see it for now.

Half considering the nuclear option of trying to rewire everything from scratch so at least I'd know what everything is, but that'd mean it'd be off the road forever.

Engine bay is also a mess but main issue is many of the plugs themselves have disintegrated imin addition to the random unknown wires that don't connect to anything.

[reelizmpro]

Just consider what's in that area. The small wedge bulb in that area goes behind the HVAC panel. Find out which section isn't illuminated and you'll find where it goes. The red and brown look like cigarette lighter leads. You need to figure out what's not working. It will help you figure out what's what.



This was only in the 325i cars. I think it was tach signal or OBC related - C104 connector. Does the tach work ? does the CODE function on the OBC work? I did find this thread...

https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20/70682-5-88-m20-into-a-4-87-chassis

Air temp sensor that mounts to a hole in your airdam. Circular plug appears to be for windshield washer level sensor. The 2 blade connector is for the AC drier.


These two are for early model radiator temp switches on driver's side.

[2mAn]

Thanks, yea I think a lot of the center console needs those wires... Time to rip it apart again ...

I will report back soon.

[mavrikno13764]

Trying to un-fuq the E30 and I am trying to identify a bunch of various connectors.


Those 2 wires Im holding... no idea?... Notice anything else?

I think these are ABS sensor wires. Those connectors are notorious for falling apart.

[2mAn]

Wiring request:
-Does anyone know the color combo of the wires that physically connect to the Cowcatcher Foglamps?
-Does anyone know the colr combo of the wires that physically go to the coolant reservoir on the early model?

These two would be a huge help in sorting out some of the hacking thats been done on this car.

Thanks

[max.rodriguezzz]

heres a wiring diagram pdf, maybe you might find this to be helpful -

https://shark.armchair.mb.ca/~dave/BMW/e30/

[max.rodriguezzz]

Wiring request:
-Does anyone know the color combo of the wires that physically connect to the Cowcatcher Foglamps?
-Does anyone know the colr combo of the wires that physically go to the coolant reservoir on the early model?

These two would be a huge help in sorting out some of the hacking thats been done on this car.

Thanks

Taking a look at the diagram from that link^ (for your 1986 325e? I believe?) It appears that,

Fog Lights:
Right Hand Wires = Yellow/Violet & Brown
Left Hand Wires = Yellow/Brown & Brown
(page 74)


Coolant Reservoir (Level Sensor):
Coolant Level Sensor = Brown/Red & Brown
(page 71)

[2mAn]

Thank you Max. I ran wires from the Brown/Red & Brown to the Coolant Reservoir on the driverside and WIN!... One less light!


One step closer, just need to make a 'final' version with the proper connector and cleanly run wires..



Asking around, Bobby sent me a link to Classic Daily which is perfect except it ends up being like $50 for a connector... Am I crazy for thinking thats a lot for a 3D printed piece? I spent $120 on the brake ducts & Brackets for the Cowcatcher which is a LOT more plastic than this... this is like $2 maybe, but I get the whole 'pay for the design work' thing but still...

[reelizmpro]

Simon, the wiring runs down the driver side fender anyway, pull back the wire wrap, find the wires and just tap into the coolant level circuit instead of running wires all the way from the passenger side back to the drivers side. Also, those later model connectors are also used on the brake fluid reservoir, fuel pump, etc. if you come across a late model parts car. I wish I had cut more of them off when E30's were plentiful at the yards.