Originally Posted by efiniluvr
This is your best option, less messy. Although this would mean having to take off TWO intake manifolds to swap over the WRX harness. So while you're at it, get a new turbo inlet so you don't have to remove the IM again in te future. I wish I had done that in the first place. Right now, I have to pull the IM off to replace the fuel one due to the common leaky fuel line, so I ordered a new inlet, Grimmspeed phenolic spacers and a AFT MAF hose to do everything at once.
Why do you have to take off the manifold? I pulled my cut harness off while it was in the car.
Just remove the pwr steering, alt, and ac then use wrenches.