1998 FLD120 Jake brake wire numbers

My original engine didn’t have jakes on it. I added them to the new engine. I read that ALL trucks were wired from the factory for jakes. I have the connections in the injector wiring harness. My issue is inside the cab. I have two connectors that are not plugged into anything. Maybe these are it. I dunno.

Freightliner was of no use due to the age of the truck. Their new software is only good till 2000 or so. They said some dealers have the old software. I called around with no such luck. I was able to get a few wiring schematics from a garage and he can wire them for me but I think I can do this myself. Plus I need to save money as some of you know my issues with this entire project.

So, I’m reaching out to see if anyone has any old books, schematics, notes, etc. I will attach what I was given.
The wiring is all yellow in color but is numbered and I can read the numbers. Wasn’t sure if these numbers are Freightliner or Detroit or both…..meaning they worked together on the engine specific wiring and made it easier for diagnosis.

I went through a few junkyard trucks but couldn’t trace the wiring very far and some had different numbers.

 

And forgive me if this is easy for some. Wiring and schematics is not my strong suit at all. I’m a step above a blind person trying to figure this out.

 

On the schematics they show 30 pin connectors. Mine are different. Bottom is 36. Top only has 3 wires so not much going on there.

 

@Rideandrepair

 

@jamespmack

 

You the man @Rideandrepair. I appreciate it greatly!!!!