Which is the wiring harness I need?
There are two listed on greenline:
49C-A003 Sensor SOL Harness 5P (For 415-T003 PowerFC)
49C-A004 Sensor Harness 5P-L (For 415-A013 Boost Control Kits)
I hardly think the power fc will go bye bye.
The plug is common enough (a 3-pin header connector should do the trick if I can find one that fits!) and once I have a photo of one of the Boost Control Kit 5-pin plug (& associated coloured wires) to confirm we should be good to go.
If you look at my photo on the left, and your's from the FAQ on the right below:
Looking straight at the photos, pin 1 is on the left of my photo, and in yours pin 1 is on the right of the photo. (the orientation of the plug is reversed in the photos)
Looking at your photo, it seems right to left:
Pin 1: Pres. Sens. Red (Positive)
Pin 2: Pres. Sens. Green (Signal)
Pin 3: Pres. Sens. Black (Negative)
Pin 4: Solin. Red (Positive)
Pin 5: Solin. Brown (Negative)
So, once I can get someone to take a slightly better picture of the plug, i'm pretty confidant once I get the right plug, i need to use wires 4 (pos) and 5 (neg)!
Not worth the $30 + postage IMHO.