Audi 5000 S 1985 Wiring Diagram

I’ve seen more electrical fires caused by guys guessing with aftermarket wiring diagrams than I have actual component failures. If you’re working on a Audi 5000 S 1985 Wiring Diagram job, you need the real thing. This 24-page factory print from Mitchell brings you the exact schematics Audi used at the line. No reprints, no third-party redraws. You get the cooling fan circuit (pages 2 and 3) split by turbo and non-turbo, ground points, and connector pinouts that match what came from Ingolstadt.

Cooling Fan Circuit: Except Turbo vs Turbo

Page 2 shows the non-turbo fan circuit. Page 3 covers the turbo version. They are not the same. On the turbo car, the fan relay gets its signal from the ECU instead of a thermal switch. If you mix them up you’ll be chasing ghosts. The manual labels every wire color, gauge, and connector at the fan motor. I’ve used this exact diagram to fix a car that somebody else already replaced the fan twice – turned out the relay ground was missing because a previous tech used the wrong schematic.

3 Systems Covered in 24 Pages

Don’t let the page count fool you. This wiring diagram manual covers the full system wiring for the 1985 Audi 5000 S. You get:
– Cooling fan circuit (turbo & non-turbo)
– Fuse box assignments and relay locations
– Ground distribution points
– Charging system and starter circuit
– Interior lighting and accessory feeds
The schematics are laid out with the harness connectors labeled. That alone saves you an afternoon of tracing wires behind the dash.

What Page 1 Tells You

First page of the PDF shows the title block: “SYSTEM WIRING DIAGRAMS S” and a timestamp from the Mitchell database. That’s your proof of authenticity. No blurred scans, no pixelated lines. These are clean line drawings with component callouts you can read under a work light. The file itself is straight from the original Mitchell CD-ROM, not a fifth-generation photocopy.

Source Validity: OEM Factory Print vs Aftermarket Guesswork

Aftermarket wiring diagrams are notorious for swapping terminals, duplicating ground points, or showing a connector that never existed. This manual comes from the Mitchell Repair Information Company – the same data source that feeds dealership service bays. Mitchell licensed the OEM schematics directly from Audi. You don’t get a “generic” diagram that says “similar to most models.” You get the 1985 Audi 5000 S specifically. If you’ve ever grabbed a Haynes manual for a wiring issue and found a drawing that doesn’t match your harness, you know the value of this.

Audience Fit: When You Need This Manual

DIY owners and home garage guys: this is your safety net. Electrical problems on these Audi 5000 S cars are often in the engine compartment harness where the insulation gets brittle. Before you cut a wire, buy a multimeter from Automotive Wiring and check continuity against the diagram. Professional mechanics: this book saves billable hours. One look at the cooling fan circuit (page 2) tells you exactly which terminal should have 12V with the AC on. No guesswork. If you’re working on an older German sedan, you need to understand the Automotive Industry Overview history of how these circuits evolved – but that’s a different conversation.

Related Manuals for Audi Electrical Systems

• Audi A3 Wiring Diagram – OEM Fuse Box & Relay Assignments
• Audi A8 2005 Wiring Diagram – Factory OEM Specs
• Audi allroad quattro 2005 Wiring Diagram – Factory Electrical Schematics

FAQ – Common Questions About This Wiring Diagram

Does this manual cover the turbo models?

Yes. Pages 2 and 3 separate the cooling fan circuit for turbo and non-turbo cars.

What torque specs are included?

Wiring diagrams don’t list torque values. But the manual does include fuse ratings and wire gauge specifications. If you need torque specs for the engine or chassis, look at the 1985 Audi 5000 S factory service manual.

Can I use this to diagnose a no-start?

It helps with the starting circuit and ignition feed wiring, but it does not include engine mechanical or ECU pin-out details. Use it in combination with a full service manual for that job.

Is the wiring diagram in color?

This is a black-and-white line drawing. Wire colors are labeled with text (e.g., “red/white”) so you can identify them easily.

24 pages of factory-correct schematics that will keep your 1985 Audi 5000 S electrical system running right. No fluff, no reprints – just what the factory used. Download the Factory Manual now and get back to turning wrenches with the right data in your hand.