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Discussion Starter #1 (Edited)
Needed parts:

- GID or CID, if Siemens VDO, minimum, firmware version 49. Facelift model. If Grundig, any version firmware version
- UHP4 module, I had GM 13403828
- UHP4 plug
- any original GM microphone
- microphone trim GM 24461582, 24403106, 13149794, 24469993 (this codes have the alarm sensors in, there is another only for the mic trim option)
- cd30, cd30mp3, cdc40opera, cd70navi, dvd90navi, dvd100navi
- use vectra c wiring diagram or meriva a

UHP4 connections:
- pin 32, red 0.75, positive, behind a fuse, permanent +, maximum 15A

- pin 16, brown 0.75, minus connection, best to same brown wire of GID/CID/Head Unit

- pin 29, green 0.5, twisted with wire pin 30, MID-SPEED CAN-HIGH, to GID/CID or Head Unit same color,

- pin 30, white 0.5, twisted with wire pin 29, MID-SPEED CAN-LOW, to GID/CID or Head Unit same color

- pin 23, black 0.5, Mute signal for Head Unit, in general pin 11

- pin 27, yellow 0.5, twisted with wire pin 11, audio signal to Head Unit, in general pin 34

- pin 11, yellow/brown 0.5, twisted with fir pin 27, audio signal to Head Unit, in general pin 40

- pin 9, mic cable screen

- pin 25, mic cable (choose a wire color and be consistent to the mic connection).







It can be done without this mess (with dash in place).










UHP4 code index as below:


Module location near passenger airbag (mainland car):


It works also with CID:


Programming required, tech2 or mdi only job:
Head Unit:
- mid-speed canbus set mobile phone portal to present
- in variant config, set mobile phone portal to present
GID/CID:
- same as head unit
UHP4:
- I do not remember fully, I think: program mid speed config head unit present, display present, mobile phone portal present, dab present or not, depends if you have it, should be present in all modules if you have DAB, security code programming, code index programming.
 
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