Vss on 165 ecm help!

[Vance Rose]

At 10:42 AM 09/20/1999 -0400, you wrote:
>I have one last thing to solve on my tpi s10 project.  I have a mech
>operated speedo and the prom is for 89 firebird 350 tpi   (apyu)  It has one
>wire -Brown for the vss.
>With the ign on I have 13v nothing connected.  I've tried the optical type
>but most I find are bunt out and I believe they are only dc pulse.  What do
>I need to send to the ecm?  What is it looking for in detail.  I have and
>inline gen. used on my 84 jeep grand wagoneer.  On my fluke meter it reads
>4v ac.  how can I make this work?   And I am sure I will shoot someone if
>they start telling me to modify the code of go buy something from JTR. ;-)
>
>thanks, Mike R
>
>Hi Mike

	In the middle of s-10 project myself. what year is your s-10?. Believe the
optical unit using a transistor to "ground" the 12v coming from pull up
resistor in ecm. My pu is using an optical unit for vss.

	Would it be possible to get a copy of bin file?

Vance

PS: my s-10 is a 84 - came mech speedo - wiring diagram indicate the cruse
control uses a vss signal. still have to check my speedo to see if it will
accept an optical pickup.