[Gmecm] Tachometer circuit question

[Steve Ravet]

Scott Feaver sent along an IP schematic -- the list rejected the
attachment but I moved it to the wiki page.  Here is Scott's note:

Here is a diagram for you.  You'll be looking at the wire to B1.
Coming 
from the module..  It is white all the way with a connection in the
middle 
somewhere.

Hope this helps.
Scott

ps, go to diy-efi.org, click gmecm, click wiki, click GmecmScratch to
see the pdf file.  You may have to click a "show attachments" link if
there's nothing on the scratch page.

There is a scratch page for each list, this replaces the FTP site as a
place to put files of a temporary nature.  The list is configured to
reject attachments to emails.

regards,
--steve 

> -----Original Message-----
> From: gmecm-bounces at diy-efi.org 
> [mailto:gmecm-bounces at diy-efi.org] On Behalf Of Robin Handley
> Sent: Sunday, March 11, 2007 2:56 PM
> To: gmecm at diy-efi.org
> Subject: Re: [Gmecm] Tachometer circuit question
> 
> >I have a 1988 Cutlas Cierra (2.8L) which the tachometer 
> gauge has not 
> >worked since I purchased the car. The schematics that I have 
> indicates 
> >that the ECM gets an RPM signal from the ignition module via white 
> >wire. Other than this, I can find no other reference in my 
> manuals to 
> >the feed circuit for the tachometer gauge. I assume it would 
> be similar 
> >to the VSS circuit (the pulse train is fed to the ECM which 
> applies a 
> >scale factor and outputs the scaled signal to the tachometer).
> 
> Sorry I know nothing about the 1988 Cutlass, but I just drive 
> my rev counter directly from the -ve coil wire - exactly as I 
> did before I fitted a GMECM.
> 
> HTH
> 
> Robin 
> 
> _______________________________________________
> Gmecm mailing list
> Gmecm at diy-efi.org
> Subscribe: http://lists.diy-efi.org/mailman/listinfo/gmecm
> Main WWW page: http://www.diy-efi.org/gmecm
> 

-- 
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium.  Thank you.