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Shift-I Install

Posted: Mon Mar 02, 2009 12:11 pm
by Andre' Surles
Shift-I requires only three wires to be connected, Ground, Ignition and Tacho. Ground and ignition are commonly found at the back of the main instrument. The tacho can be connected to either a digital signal from the engine controller unit (ECU) to the instruments tacho (if available), or by connecting to the low side of the ignition coil. Connecting to the coil is possible for transistor type ignition.

The diagrams below show the different ways the Shift-I Tacho Wire can be
connected.

Image

Image

Re: Shift-I Install

Posted: Mon Feb 21, 2011 7:02 pm
by mnichols
Andre, I just purchased your ShiftI light indicator. My preference is to use the ECU tach signal output to the tachometer in the dash. My car is a 95 M3. According to the Bentley manual, there are four wires coming out of the ECU that go to the instrument panel.

Blue
wht/Vio
wht/yel
Black

Do you have any idea which of these four would contain the tach information?

Re: Shift-I Install

Posted: Mon Mar 28, 2011 10:25 am
by niacc
So, have you received an answer to your question? I have a 93 325i, so I have the same question.

Dave

Re: Shift-I Install

Posted: Thu Apr 07, 2011 9:19 am
by Andre' Surles
mnichols wrote:Andre, I just purchased your ShiftI light indicator. My preference is to use the ECU tach signal output to the tachometer in the dash. My car is a 95 M3. According to the Bentley manual, there are four wires coming out of the ECU that go to the instrument panel.

Blue
wht/Vio
wht/yel
Black

Do you have any idea which of these four would contain the tach information?


Sorry guys, our forum isn't altering me of any information as of late.

I don't have any idea which one is the tach signal, you may be able to contact this user on youtube.

http://www.youtube.com/watch?v=AkZPHSmKHFI

Thanks
Andre'

Re: Shift-I Install

Posted: Thu Oct 23, 2014 4:04 am
by Diana
Andre, I just purchased your ShiftI light indicator. My preference is to use the ECU tach signal output to the tachometer in the dash. My car is a 95 M3. According to the Bentley manual, there are four wires coming out of the ECU that go to the instrument panel.
:roll: :evil: :cry: