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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > B58 Turbo Engine / Drivetrain / Exhaust Modifications > Tachometer Signal Source - CPI Kit
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      10-12-2019, 05:53 PM   #1
Solid67
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Tachometer Signal Source - CPI Kit

My mechanic is trying to wire the AIC1 controller and the tachometer signal needs to be connected to pin 9 of the OBDII port according to Fuel-It

"For the rpm, that is typically pin 9 on the OBDII port. If you don’t want to use the OBDII port you’d have to find the corresponding pin at the DME in the engine bay."

Does anyone know what the corresponding pin in the DME is? I don't want to use pin 9 of the OBDII port because of my BM3 wifi agent which is always plugged in.
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      10-13-2019, 01:23 PM   #2
Fuel-It!
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You can use a posi-tap on the wire going in to the OBDII plug itself under the dash.
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      10-18-2019, 09:38 AM   #3
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Quote:
Originally Posted by Fuel-It! View Post
You can use a posi-tap on the wire going in to the OBDII plug itself under the dash.
Do you have a pinout diagram to identify which plug it is?
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