I am a noob in need of assistance with hooking up the carputer to my wiring harness and other associated plugs in the glove box. I'm at a loss for what some of these connectors actually go to. (pics below)

ECU so you can get a better idea of what I'm talking about

I swapped a 1990 m20b25 into an 86 325e and bought the corresponding harness and ECU. I was wondering if I need to get the ECU reset or reflashed before hooking it up.
And these are some plugs that I found on the glove box that might be important

Any help is appreciated and if there is already a similar forum that would be useful to my project i'd appreciate your URLs as well. Thank You!
ECU so you can get a better idea of what I'm talking about
I swapped a 1990 m20b25 into an 86 325e and bought the corresponding harness and ECU. I was wondering if I need to get the ECU reset or reflashed before hooking it up.
And these are some plugs that I found on the glove box that might be important
Any help is appreciated and if there is already a similar forum that would be useful to my project i'd appreciate your URLs as well. Thank You!
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