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Audi Coupe quattro Digital Dash conversionAccording to the TFA (The Family Album....), the Coupe Quattro was optionally fitted with the green WR UR quattro digital dash. This however, seems to have mainly been restricted to Left Hand Drive cars... But there are rumours that several RHD examples got the dash as well.... It's also shown in the handbook for the RHD cars, with a full english translation for it's operation, etc.On that basis, I've decided to install the Digital Dash on my CQ. I was unable to aquire the green WR dash (too bleeding expensive!), so I managed to get an Orange dash from a Coupe GT. These dashes was fitted to the North American '86 and '87 Coupe GT's. There is the added bonus in using this dash in that documentation on the pin-out and the signals for the dash being readily available on the web. Dash DocumentationAudi published a booklet "Electronic Instrument Display for the Audi Coupe GT". This details the pin-out of the 35 pin connector at the rear of the dash, and what each pin is connected to, and what each pin does. You can find a zipped copy of the booklet here : GTDigiDash.zipI've also listed links to the individual pages as well. Front Cover Table of Contents Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Parts ListA bit of research established a shopping list of parts that are required to do this...I've listed the necessary parts below. 1. Digital Dash unit (suprise suprise) 2. Gearbox speed Sensor 3. Fuel metering plate for the KV engine with potentiomer 4. Light sensor (in the small triangular dash vent) 5. Dash backlight adjuster, digital dash version 6. Computer switch 7. Multi-plug conector for the back of the dash unit, with wiring tails. 8. Sundry items such as wire, conduit, connectors etc. I managed to source everything from the USA, except for the metering plate which came from Germany. Digital Dash UnitHere are some photographs of the unit whilst out of the carGearbox Speed sensorThe speed sensor is the black cylindrical item. You also need the three pin conector (shown with tails attached). panerai replica sale The aluminium item is the threaded boss from the gearbox, and the ivory coloured item the speedometer cable drive gear. The speed sensor just screws onto gearbox where the speedometer cable normally goes.Fuel Metering plateOn the side of the metering plate is a potentiometer. This measures the angle of the "flap" that meters the amount of fuel being delivered to the engine. The dash uses this information for calculation of MPG, etc. You can see the potentiometer on the side of the metering plate.Light sensorThis tucks into the triangular vent in the side of the dash top cover. breitling replica sale The dash uses this sensor, and another light sensor on the face of the main dash to set the brightness level of the dash.Dash backlight adjusterUsed to adjust the light setting of the dash, plus it works in conjunction with the computer switch.Computer SwitchUsed to control the dash, change from kph to mph, etc. etc.
Multi-plug connectorThis connects the dash to the rest of the carProject Starts!07 Jan 2006The Air Filter box is now installed in the car. The standard CQ loom also includes the connector for the metering plate potentiometer. panerai replica sale The other end is a 4 pin red connector behind the dash somewhere. It's as simple as just plugging it in. I hope....15 Jan 2006I got some of the correct colour wire for the speed sensor connections. Spliced it in, and covered it with wear resistant sleeving. Once the speed sensor is fitted, the sleeved cables will follow the speedo cable route through to behind the dash.13 May 2006The speedo cable was removed from the gearbox end by just undoing it. At the speedo end, it's a bayonet style connection which is quite hard to get at, but not impossible. The Speedo cable fits through 2 grommets, one behind the wiper motor, and one in the firewall, near to the coil. omega replica sale I kept the speedo cable for possible future refitment. I also had an old damaged cable from which I removed the two grommets. replica watches sale The speed sensor just screws on onto the gearbox, and the harness plugs in. rolex replica uk I routed the cables up behind the PAS resevoir, through the firewall, and in behind the dash. Some liquid soap allowed me to easily fit the grommets.Now "all" that remains is to make up the behind the dash wiring loom, and fit the dash..... 18-22 May 2006Here's the old dash still in situ More Work to be doneAlthough the dash is functional, and appears to be working ok, there are a few things that need to be done to complete the job.1. Put some fuel in, and check that the fuel guage reading changes (done) 2. At a later date, calibrate the fuel guage. 3. Connect up the airflow potentiometer, and verify that the dash is recieving information from it. (done) 4. Connect the Tacho drive signal (done) 5. Connect up the warning light for the rear fog lights. (done) 6. Repair the mouting lugs on the side of the dash unit (a particular Audi weakness) 7. Tidy up the wiring installation, and then refit everything to complete. Connector Pin-outs that I used.NOTE : My car is a 1985 KV engined Coupe
Quattro, Right Hand drive. These pinouts have worked for me, but may
not be right for your car. Use the information provided at your own
risk.......... White Connector (113 971 998A) at rear of KV quattro dash
Black Connector (443 972 957) at rear of KV quattro dash
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Pin number | Wire Colour | Connected to / Notes |
1 | N/C (not connected) | |
2 | White / Red | Dimmer Switch Pin 2 |
3 | N/C | |
4 | Green / Violet | Electronic Ignition system Control Unit Connected to Pin 7 (not populated on my car) |
5 | Red / Yellow | Speed Sensor Pin 2 |
6 | Blue / Green | Computer Switch Pin 1 |
7 | Green / Blue | Computer Switch Pin 4 |
8 | Gray / Red | Dash Light Sensor Pin 2 |
9 | Green / Violet | Computer Switch Pin 5 |
10 | Yellow / Black | Pin 1 on Airflow Sensor (white / yellow) |
11 | White / Yellow | Fuse S16 (30A) on Busbar X Connected to circuit at the demister switch |
12 | White / Yellow | Dimmer Switch Pins 1 and 6 |
13 | White | Light Switch |
14 | Blue | Alternator Warning light Connected to Pin 10 on the White analog dash connector (WC) |
15 | 2 x Black / Blue | Rear Windows De-mister Switch |
16 | Gray / Yellow | Handbrake warning Light. Connected to Pin 5 WC |
17 | N/C | |
18 | Black / Green | Right hand indicator. Connected to corresponding colour conductor on the Hazard warning switch |
19 | Red / Blue | This Pins linked together. Fuse S4 (15A) Busbar 30. Connected to Pin 10 on the Black analog dash connector (BC) |
20 | ||
21 | Brown | These pins linked together.
Ground Connected to the chassis |
22 | ||
23 | Black / Red | Seat belt warning. Not used on my car |
24 | Violet / Black | Fuel Guage sender. Connected to Pin 8 BC |
25 | White / Green | Dimmer Switch Pin 4 |
26 | Blue / Brown | Coolant Temp Sender Connected to Pin 5 WC |
27 | Blue / Yellow | Low Coolant Connected to Pin 1 WC |
28 | White / Violet | Pin 3 on Airflow sensor |
29 | Green | Pin 2 on Airflow sensor |
30 | Yellow | Dash Light Sensor Pin 1 |
31 | Blue / White | Headlight Hi-Beam Connected to Pin 7 BC |
32 | Gray / Brown | Seat Belt Warning. Not used on my car |
33 | N/C | |
34 | Black / White | Left hand indicators Connected to corresponding colour conductor on the Hazard warning switch |
35 | White | Rear Window Demister. Connected to Pin 5 BC |