Old thread, I know...
I just looked at doing this on my BE. I figured out a cleaner way to do it.
Both plugs the yellow/blue doesnt have a wire coming out on the other side. So next time Im at the wreckers, I will pull a yellow/blue wire with male pin and a yellow/blue wire with female pin and I need 6-8" of wire between them. Splice them together with a bit of solder and shrinktube.
I really hate vampire taps, can you tell?!
Edit:
My first inspection was wrong, only on the blue plug was there only 1 leg. The white plug had an in & out. I used a yellow/blue wire with female pin, inserted in the empty spot on the lower blue plug. Routed it over along the harness and then soldered the splice into the yellow/blue out of the lower white plug.