Just wanting to make sure of a few things before I go too far.
Last night just to make sure the windows worked I plugged "B" into the back of the fuse box, grounded "D" to the body, and pluged the harness into the door. For some stupid reason I didn't check the power locks before I took it all back apart.

Do the locks and mirrors get power from "B" as well?

"A" goes to the mirror switch on the dash, right?

"C" is for the passenger door harness?

The big question I have is that I have all this extra wire, can I get rid of everything that isnt circled?

 

What year and model is the harness from? I am having trouble identifying what components get power from Connector B.

 

Ah, sorry, Its from a 93 ex coupe.

 

Ok. What I'm seeing is a 10-pin green connector (B, I assume) that plugs into the back of the fusebox to control your windows. That connector receives power from fuses 5 and 8 for driver and passenger side respectively and also powers your mirrors from fuse 13 and power locks from fuse 6.
How many pins are on each connector? That will help me cross-reference between your picture and the ETM

 

Im at school right now so I cant tell you the pin count. I do know that the "B" connector has less than the green connector to the left of it. Do I need to keep all the extra wiring or can i cut it all off so that it is not a jumbled mess under my dash?

 

"B" connector is 10 pin.
The green connector to the left of "B" connector in the picture is 12 pin.

 

you could remove the wires you don't need.

here is a link https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/%5Bfaq%5D-power-windows-locks-mirrors-into-eg-civic-1065575/

 

C is the passenger harness, A connects the mirror, I just did this conversion a few weeks ago.

 

I just looked at the unabled green connector. I think it is related to your ABS if you have it and also to your brakelights and tailights. If you have another 12 pin connector hooked up there I think you'll be good to cut them off

 

IIRC I didnt use the unlabeled green connector, this guide is what I followed w/ no trouble https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/92-95-civic-power-door-conversion-right-way-tons-pics-end-all-swap-2337026/
with this for help http://repo.jackmoves.com/v/erik/albun31/albun42/

 

Thanks guys

 

And another guide from me. Check my sig.