Where does blue tach wire go on obd2a to obd2b swap

[strider380]

So I have an obd2b motor in an obd2a car. Where can I connect the blue wire to get my tach, as I elminated it when I cut the harness to adapt to my obd2b distributor. I know everyone says search or look at the ecu pin outs, but I've been searching for days and the obd2a (ecu I am using) pin out diagram dosn't have a tach pin. Can anyone tell me how they did this?

 

[strider380]

No one else has figured it out either?

 

[snaponkid123]

im trying to figure out the same thing.. all though on my 2000 obd2b b18c1 i dont have the blue wire.. will my tach work?

 

[Taco15]

hmmm.
so you have the blue wire running from the harness or the dizzy?
see if this helps
Google Image Result for http://www.ff-squad.com/technet/wiring/obd1/obd1.pin.schematics.gif

http://www.google.com/imgres?imgurl...=wHWmTfqVNYWEtgegrcWFAQ&sqi=2&ved=0CCQQ9QEwBg

 

[Taco15]

Ok.

I read that you hook the blue wire to the Ecu which i assume would be the VSS signal (slot 10 on the diagram above)
http://ht-archive.org/showthread.php?t=2868178

it's my guess.