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Old 07-04-19, 07:38 PM   #9
BackintheFold
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Join Date: Feb 2019
Location: Near an MB ur Quattro
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Default Relay part number

So today I connected a lead between pin 2 and pin 6 in my missing J114 coil controller slot (in the Aux relay panel)and got my low oil pressure warning light working.
This just shows when you drop below 0.3 bar but at least it's something.

To connect the later 6 pin j114 relay found in lots of more recent vw/audi cars, I'll need a t piece, a 1.8 bar pressure switch and will run two wires to the relay aux socket one from the new sensor and one from the alternator b+ terminal (the small one that the alternator warning light is connected to). Connect them up to the aux relay socket in the right slots and plug in a "new" oil controller 6 pin relay
..result is the standard oil pressure warning light will light up at less than 0.3 bar, or the light will shine and the buzzer will sound at less than 1.8 bar with the engine running.

Then the later, easily available 6 pin relays will work in the aux relay board.

If you just plug a later 6 pin relay in, the wiring to the sensors etc is wrong, and you get a permanent warning no matter what the oil pressure is doing.
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2006 A3 (daily drive)
1987 MB ur

Last edited by BackintheFold; 04-05-21 at 08:37 PM.
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