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Fan Failure Light help?

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Hi Ian

How many times can I suggest you get a Workshop Manual as it has the wiring diagrams as well a heap load of other stuff that will make your life MUCH easier........

The fan fail lamp is effectively wired across the fuse(s) for the rad fans.

When the fuse is OK then the light stays off, if the fuse blows then the lamp illuminates.

There is only 1 fuse on the early cars (your 1981 S3 included), the later cars had a fuse for each fan and hence a set of dides are used to connect to the fan fail lamp.

Having only one fuse for the entire set of rad fans is a bad idea as if one motor packs up then it takes out all the working ones at the same time.

A very useful upgrade is to fit individual fuses for each motor.


1981 S3 4.2 V8 6 speed (The Mutant)

Mutant V8 Conversion Thread

Knowledge is power .................... apparently.


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Fan failure fuse is, iirc, on the fan's a special item, I think.

Scientists investigate that which already is; Engineers create that which has never been." - Albert Einstein

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