FOR AUDI CARS R8 Engine Start Stop Drive select switch button Installation wiring diagram
red wire ------- 12 V + (airbag plug 12 V + red color wire )
brown wire ----- 12 V - (airbag plug 12 V - brown color wire)
gray wire ------- button backlight (steering wheel Multifunction plug look photo )
Bluetooth RECEIVE SIDE 5 WIRS :
1. red ---- 12 V + (Gear Shift button plug red color wire or MMI select button plug red color wire)
2. brown ----- 12 V - (driving mode button plug or start/stop brown wire)
3. green ----- start/stop button signal - 01 - (if start/stop button is 6 PIN plug go to NO.3)
4. green ----- start/stop button signal - 02 - (if start/stop button is 6 PIN plug go to NO.6)
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5. black ------ driving mode button signal - (driving mode button plug NO.3 OR NO.1)
Driving mode button signal ：
A3 8V : NO.1
TT 8S : NO .1
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note : if not working , You need to find your car circuit diagram，signal wire connection position may change, you need to try more >
IF NOT WORKING ：
Tear off the receiver module protection plastic . Press the small black button above the module.
Q : If the indicator does not work .
A : check receiver module 12 V + and 12 V -
Q : If the indicator work (Lights flashing)
A : Rematch Bluetooth connection
step 1 : keep press the small black button above the module , Wait for the indicator light to stay on
step 2 : press R8 START/STOP button , Wait receiver module indicator work (Lights flashing)
step 3 : Match success
How to punch holes on the steering wheel :
Use a 3MM drill to make holes：
Fixing screws from the inside
