Dangling Mystery Connectors - What Are These For?

[laszlo]

Hi there. Recently bought an '86 535i with the stock M30B34. It runs a little rich and the idle is rough. There seem to be a bunch of connectors dangling around my engine bay. Can anyone help identify these? Is my wiring harness completely screwed?

#1 Small black connector, near charcoal canister. Brown & blue/brown wires.
https://imgur.com/a/3hXjFY6

#2 Large black connector, near charcoal canister. AMP 926 172. Brown & yellow/brown wires.
https://imgur.com/a/MyFcsiX

#3 Cut Wires, passenger side. Black and brown wires.
https://imgur.com/a/BDiRSLW

#4 Two single connectors, near fuse box. Brown and green/brown wires.
https://imgur.com/a/qXZJagW

#5 Narrow yellow connector, near power steering reservoir. AMP 926 589. Purple & yellow/purple wires.
https://imgur.com/a/Y6QqJSf

#6 Black connector, above brake fluid reservoir. Green/brown & green/white wires.
https://imgur.com/a/UYQU5eu

#7 Dangling mini connectors, near brake master cylinder.
https://imgur.com/a/3iNsaM4

[Blue Shadow]

1-washer fluid power or level, see ETM to determine which
2-fog light
6-heater control valve
7-power flow regulator switches

get the etm for your car from www.e38.org/e28 middle of the left column in the Electronics section and check the wiring colors for those and more.

[laszlo]

1-washer fluid power or level, see ETM to determine which
2-fog light
6-heater control valve
7-power flow regulator switches

get the etm for your car from www.e38.org/e28 middle of the left column in the Electronics section and check the wiring colors for those and more.

Thank you for the info! With all of these unplugged connectors, do you reckon I'm missing parts in the engine bay?
There's no accessory belt on the AC compressor pulley. The previous owner said the car had no heating.

I found this empty bracket https://imgur.com/a/2UpDR0Q - What normally bolts onto this?
Also, the wiring for the wiper fluid is really sketchy https://imgur.com/a/YQKBDm5 - This can't be stock? The windshield wipers & sprayers work.

[Blue Shadow]

bracket holds the heater control valve.

[laszlo]

bracket holds the heater control valve.

Ok, so not essential for the engine driveability. Don't need heat, I'll tackle that later.
What function do the power flow regulator switches serve?

[Ordnator]

You may have heated windscreen washer nozzles.

They take power from the screen wash motor on the screen wash reservoir.

Best regards,

Mick

[Blue Shadow]

PFR switches will light the Brake light below the tach, along with low brake fluid (three triggers). Low pressure in the PFR means power steering and power brakes in the 535 are compromised.

[DavidE9]

Did anyone track down what #5 is ? I tried the ETM without luck. 

[Aldo525]

Did anyone track down what #5 is ? I tried the ETM without luck. 

 

 

Nobody is clear in that connector but there is another recent tread asking the same:

viewtopic.php?t=162531

My answer is in the middle, a wire "match" in the ETM.

[DavidE9]

I looked too and only found what you did. I wish I knew what a "SRS Connector" was.

 

[MLastovo]

I looked too and only found what you did. I wish I knew what a "SRS Connector" was.



 

Supplemental Restraint System.

[Mike W.]

I looked too and only found what you did. I wish I knew what a "SRS Connector" was.


 

Supplemental Restraint Sytem.

AKA airbag or those goofy mouse seatbelt setups some companies used for a couple of years?

[MLastovo]

Supplemental Restraint System.

AKA airbag or those goofy mouse seatbelt setups some companies used for a couple of years?

 

 

Hey Mike,
How's Farrah?

Nope, it is a carryover from the system that was actually in the later 6ers. Apparently, only the sporty, 2 door folks got that safety feature.
D.

[Federico]

This is what #5 plugs into: 65771371460 safety switch

 

Maybe it was used to manually disarm the airbag for service? I have no idea
Notice how the plug has to be IN for the cover to close.

[DavidE9]

Well that solves that. Thanks all.