I think I?m in deep 💩

[JT_n_CT_90_ZR1]

I was thinking that also. However I did just replace the BCM and for what I?ve been reading I have to get the ECM and BCM to communicate which unfortunately are not. I am getting ERR when jump 1&2. So in a nutshell, I think I have a short with the communication wires. I have a feeling I?m going to have to take the whole dash off to find this short or at the very least why it?s not communicating.
Jeff did a fantastic job reprogramming my BCM and my ECM is brand new with my original EPROM.
As we speak I have the ABS module and that section in the back apart seeing if there is anything wrong with the wiring or modules.
There is something electrically wrong because my old BCM had chips completely burnt up. Several of them.
I have a 1966 427 I have that needs some love too so I am just trying to get the 90 Z in at least drivable condition just in case I need to bring her somewhere for another set of eyes to checkout. Unfortunately I am just a normal guy with a normal paycheck so whatever I can do myself is key.