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Trip computer

Pinout

  • 12v - 12V from the battery
  • gnd - ground
  • dim - dimmer
  • btn - button
  • spd - speed sensor
  • kl - K-line direct to the ECU

The display wakes up if activity appears on the k-line. Therefore, you cannot connect other devices on the line, or connect this wire to the on-board network. Otherwise, the display will not fall asleep when the ignition is turned off. The display does not fall asleep if the KLINE cable is connected.

Installation

disassemble the dashboard (on photo is dashboard from A6C4)

cut 5mm here

insert the display

display should flush into case

fix PCB and wires with sealant or glue

Cut plastic cap

Put red translucent cap instead (first, remove protective film from both sides)

Connection to Audi 100 (а6с4)

Red connector:

  • 7 - speedometer
  • 10 - ground
  • 14 - +12v
  • 17 - dimmer

Green connector:

  • 2 (was not used) - K-line
  • 8 (was not used) - button

From green connector pin 2 put wire to the Invent ECU K-line

Connection to Audi 100 C3 before restyling

Black connector T26:

  • 2 - speedometer out
  • 10 - ground
  • 1 - +12v
  • 5 - dimmer

remove protective film from the display

put black sticker mask on top

Then, assemble the dashboard

Button

If you don't have stock button at wipers switch - use pushbutton:

for 4-pin pushbutton - solder wires diagonally, to the 1 and 3 pins

first wire connect to the Green conn. pin 2 of the dashboard second wire - to the ground

it's convenient to put button into the wipers switch, and fix with the glue or sealant

The result

Dashboard pinout Audi 100 (а6с4)

Dashboard pinout Audi 100 C3 before restyling

Basic dashboard (without additional gauges)

Black connector T26:

  • 1 +12 V for clock – red - blue
  • 2 speedometer signal – white-blue
  • 3 fuel level – purple - black
  • 4 speed sensor signal from gearbox – brown - red
  • 5 dashboard backlight – gray - blue
  • 6 high beam lamp – blue - white
  • 7 parking brake lamp – gray - yellow
  • 8 hazard lights lamp – blue - green
  • 10 ground – brown
  • 11 +10 V – black - blue
  • 12 turn signal right – black - green
  • 15 +12 V to the backlight regulator – gray - green
  • 25 turn signal left – black - white
  • 26 from hazard lihts – brown - white
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