What are these connectors for ?

Flying Frank · 05-06-21, 06:10 PM

As per the title, these two connectors are located towards the offside rear of the engine bay.

Anyone have any idea what they are for........I have the distant recollection that the two socket one could be a very basic diagnostic plug , but not sure if my memory is deceiving me or not ? If it is, what parameters might it be checking ?

Any ideas much appreciated.

20210604_091904 by Frank Brejcha, on Flickr

mikes2 · 05-06-21, 10:06 PM

I very much doubt they're diagnostics. Back in 1980, there were no Audis with diagnostic capability.

Not easy to tell from the photo - what colours are the wires.

The 2 pin looks like a typical fluid level sensor like you'd see on a brake fluid cap or similar. It's obviously on the wrong side for your car.

The 4 pin is more like a power connector. It's likely they're unused on your car and are part of a loom for other options not installed.

Isimmo · 05-06-21, 10:38 PM

Are your reversing lights working?

4v6 · 06-06-21, 07:16 AM

The little rubber covered one looks like the connector to the "econometer" sensor similar to that on a GT5s.
As Mike says, the 4 pole one looks like some kind of power connector, looks like the one used under the dash on a coupe/cq/ur for the lighting loom on those models.

BackintheFold · 06-06-21, 09:07 AM

As per Mike, likely unused in your car and can be tidied out of the way.

Sent from my iPhone using Tapatalk

davow · 06-06-21, 11:19 AM

Just had a look at my car Frank, nothing like that on mine

05-06-21, 10:06 PM	#2
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	I very much doubt they're diagnostics. Back in 1980, there were no Audis with diagnostic capability. Not easy to tell from the photo - what colours are the wires. The 2 pin looks like a typical fluid level sensor like you'd see on a brake fluid cap or similar. It's obviously on the wrong side for your car. The 4 pin is more like a power connector. It's likely they're unused on your car and are part of a loom for other options not installed. __________________ 1991 90 quattro 20v sport 1991 90 quattro

05-06-21, 10:38 PM	#3
Isimmo Super Moderator Classic Audi Club Member Join Date: Jul 2007 Location: Sissix-by-the-sea Posts: 15,218	Are your reversing lights working? __________________ 1985 WR quattro, 1985 20vT RallyRep, 1993 MTM ABY S2 Avant. 2010 S3 Sportback.

06-06-21, 09:07 AM	#5
BackintheFold Senior Member Classic Audi Club Member Join Date: Feb 2019 Location: Near an MB ur Quattro Posts: 1,171	As per Mike, likely unused in your car and can be tidied out of the way. Sent from my iPhone using Tapatalk __________________ 2006 A3 (daily drive) 1987 MB ur

06-06-21, 07:16 AM	#4
4v6 Ex Member Classic Audi Club Member Join Date: Dec 2007 Posts: 5,565	The little rubber covered one looks like the connector to the "econometer" sensor similar to that on a GT5s. As Mike says, the 4 pole one looks like some kind of power connector, looks like the one used under the dash on a coupe/cq/ur for the lighting loom on those models.

06-06-21, 11:19 AM	#6
davow Grown up member Classic Audi Club Member Join Date: Nov 2009 Location: worcestershire Posts: 863	Just had a look at my car Frank, nothing like that on mine