This is probaly a simple question maybe I am over thinking this but I de loomed the entire harness and in the process I cut all the messy ground thinking I could easily extend and reroute as a ground is a ground but after looking at some of the wires coming outta the sensors and connectors I don't wanna have an issues. I am having issues re routing the ground wires to the correct spots.

So far:

Wire 2 is pin#92 grounds for the TPS,02s,coolant temp, MDP?, and fuel tank pressure. So should I connect all these wires together then run a ground or is the ecu the ground?

Wire 1 and Wire 3 go to this green and blue blue plug in the next pic



theres 1 more black wire coming outta the green and blue plug can anyone tell me where i can find a pinout of that connector or where this black wire goes if the other two the o2 sensor wires.


Would it be bad to connect all the wires together and run the one wire to the ecu pin then run my own ground off where I connect them together to make sure they are properly grounded or will that have any effects...Sorry if I don't make any sense