I知 doing a b20 w a integra transmission swap but I知 confused on the harness part what do I have to change and extend? Can someone help

 

You do know that an Integra has a separate automatic transmission control box that would have to be wired up in a Civic chassis... Civic auto trans control is inside the ECU.

 

would it be better to just get an auto integra harness?

 

So, you are suggesting putting a complete Integra harness (from headlamps to tail lamps... dash wiring and all) so you would have the AUTO transmission control box... and then you would change almost everything else to make it work in the Civic chassis... really ???

I don't think you are grasping the extent of this conversion.

 

No just from the engine bay not whole harness

 

How does just the engine harness help ? The transmission control box is in the cockpit under the dash on the left kick panel.

Do you have a disability and NEED an automatic transmission ?

 

What do you suggest to do then?

 

Buy an automatic Integra OR convert your Civic to manual... that is WAY easier.

 

So there is no way of doing it w the oem eg harness?

 

Not a "plug-n-play" solution... you would have to manually wire in the transmission control box (which is about 50 wires), use the Integra engine harness, and then add the auto plugs to your Civic chassis harness plugs on the passenger side shock tower... and then terminate all of this wiring where it properly needs to go. You would need the complete chassis wiring diagrams for both the Civic chassis and the Integra chassis. If you could source an Integra automatic chassis, you should extract all of these plugs with as much wiring behind each clip so that you can graft them into the Civic chassis.