Radiator fan wires.

[kaiser]

I am trying to fit another fan to the 1.8T.
has anybody got the wiring diagram for the fan and know which wires trigger at what temperatures?

Thanks.

[SD1too]

Kaiser; first I need to know whether you currently have a fan with or without a resistor.

I do have a wiring diagram and I can identify the wires for you.

Simon

[kaiser]

Hi.
The fan comes of a scrap V6 tourer I bought for spares. I think it has been replaced at one stage, there is evidence the front has had some damage.

the fan has a resistor, so it looks as if it is a later model.

The wiring diagramme I have made is as follows:
From the car.
one connector heavy wire Brown blue (Nu), Light wire yellow blue (Yu) and blue/red (Ur)
Other connector: heavy wire black (B) light wires Blue (Ur) and Blue/yellow (Uy)

The wires to the fan: N, y, ur on one connector, and U and B on the other:

The trigger wires for the relays come on at different temperatures, and (might? might not?) stay on as the temperature changes to the next band?

[SD1too]

Originally Posted by kaiser

The wires to the fan: N, y, ur on one connector, and U and B on the other

U triggers the low speed.
UR triggers the high speed.

The trigger wires for the relays come on at different temperatures ..

Yes.

... and (might? might not?) stay on as the temperature changes to the next band?

They do. The slow speed relay remains energised when the fast speed relay is triggered.

I have had to answer in general terms because you haven't made it clear which fan you are talking about: that from your 1.8T or the scrap V6. Please also reconsider the precise question I asked in my last post. Without the full story I cannot give you completely reliable answers.

Simon