So i have a 97 b20 in a 94 hatch and i just replaced the wiring harness from a shabby diy to a tucked one today that fit the ecu(obd1) instead of having to splice. i have 1 extra connector that has no room to be plugged in now i think it’s thats where the subharness would go. i don’t understand wiring all that well and i bought the car already spliced and pinned from another person i just want to know what the 4dizzy-looking plugs are after i disconnected them from the ecu connectors. everything else is fine and is relatively easy to find or trouble shoot. any help app

the plugs i am left over with after hooking everything to the ecu

2 plugs i have no clue what for. came off of the wires that went from harness in the engine to the ecu

2 plugs i have no clue what for. came off of the wires that went from harness in the engine to the ecu

Old ecu plugs and unknown wire.

 

i know i will need to remove the dash i just want to know if i need a subharness for climate, fuel pump, and for the interior of the car since i got a tucked harness and the old one was spliced/made. i’m relatively new to the honda game and i’m trying a swap

 

I believe you will need a subharness, you can search on eBay for this. I can send some pics of my wiring.

 

i have the subharness as we speak. pics of your wiring would be helpful! thank you so much!