Help needed…LS1 BLUE pcm novice question

I am wiring in an auto meter shift light into the ASA race car. 
The module number is 16238212, marked red/blue. 
My web search tells me this is a 97-98 Corvette which is logical. 
From there, I'm getting conflicting info on what pin is the tach signal. 
Has anybody crossed this bridge that is tuned in this evening?

A little more info....here is the pcm

Mrk motorsports has a diagram that calls out #35 on the blue bank, white wire which aligns with my pcm. 
I will head towards that, but if anyone can verify before I throw power to this, great!  
 

Part of the confusion may be that there are two different red/blue PCMs, the early type and the '99-up type.  They are NOT pin compatible.  (The '99-up type is largely pin compatible with blue/green with a couple exceptions)

Pete. (l33t FS) said:

Part of the confusion may be that there are two different red/blue PCMs, the early type and the '99-up type.  They are NOT pin compatible.  (The '99-up type is largely pin compatible with blue/green with a couple exceptions)

That might be what steered me sideways. Thank you. I'm going to pick up some splices this evening and see if I'm on target. 

Just a quick note to close this one out...the splice worked and the shift light functions correctly.

#35 on BLUE BANK (white wire) is the tach signal.