MB aux relays. Number 18

BackintheFold · 12-04-19, 08:18 PM

My aux relay panel had no relay in this position (top right as you look at it)
It has wires running to the back of it, but I can't find them on the wiring diagram.
Does anyone know what the relay position is for?
Thanks

mikes2 · 13-04-19, 08:41 PM

According to the parts lookup, it's for day running lights for Norway / Sweden

BackintheFold · 15-04-19, 08:59 AM

Ah brillian tthanks Mike.
Where is this "parts lookup" you refer to please? I use the parts diagrams now and they are invaluable!

mikes2 · 15-04-19, 09:23 AM

They're on-line at 7zap, but I've got an older version which is useful for the older cars as parts which show as obsolete on-line are listed on the old copy.

BackintheFold · 17-04-19, 01:28 PM

ahhh I get it now. The 7zap diagrams do show aux relay panel with position numbers.

thanks. My buzzer is definitely in position 2, but isnt buzzing. I will have to check the wiring at the back to make sure that it is supposed to be in there, and the same for position 18. Now that I have two possible candidates for the locations I can check on the wiring diagram to see what is actually there!
As you know, 7zap shows alternatives for many relay positions, and the DRL and buzzer are two relays that have differing locations.

BackintheFold · 21-04-19, 08:49 PM

The number two relay position is wired for the buzzer, and a buzzer is fitted in there but it's not working- so may need a new buzzer or have to check the wiring.
Relay 18 is, probably, the DRLs. There is a thick yellow wire (dipped headlights I believe)in that position, but the remaining wires don't match the wiring diagrams.
I'll let that one slip...

13-04-19, 08:41 PM	#2
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	According to the parts lookup, it's for day running lights for Norway / Sweden __________________ 1991 90 quattro 20v sport 1991 90 quattro

15-04-19, 09:23 AM	#4
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	They're on-line at 7zap, but I've got an older version which is useful for the older cars as parts which show as obsolete on-line are listed on the old copy. __________________ 1991 90 quattro 20v sport 1991 90 quattro

21-04-19, 08:49 PM	#6
BackintheFold Senior Member Classic Audi Club Member Join Date: Feb 2019 Location: Near an MB ur Quattro Posts: 1,171	The number two relay position is wired for the buzzer, and a buzzer is fitted in there but it's not working- so may need a new buzzer or have to check the wiring. Relay 18 is, probably, the DRLs. There is a thick yellow wire (dipped headlights I believe)in that position, but the remaining wires don't match the wiring diagrams. I'll let that one slip... Last edited by BackintheFold; 21-04-19 at 10:00 PM.

15-04-19, 08:59 AM	#3
BackintheFold Senior Member Classic Audi Club Member Join Date: Feb 2019 Location: Near an MB ur Quattro Posts: 1,171	Ah brillian tthanks Mike. Where is this "parts lookup" you refer to please? I use the parts diagrams now and they are invaluable!

17-04-19, 01:28 PM	#5
BackintheFold Senior Member Classic Audi Club Member Join Date: Feb 2019 Location: Near an MB ur Quattro Posts: 1,171	ahhh I get it now. The 7zap diagrams do show aux relay panel with position numbers. thanks. My buzzer is definitely in position 2, but isnt buzzing. I will have to check the wiring at the back to make sure that it is supposed to be in there, and the same for position 18. Now that I have two possible candidates for the locations I can check on the wiring diagram to see what is actually there! As you know, 7zap shows alternatives for many relay positions, and the DRL and buzzer are two relays that have differing locations.