I've got an 03 GU Patrol ZD30 DI and I've discovered a strange bit of wiring.

I'll get a photo when I get home today, but while removing the awful wiring job done by the previous owner I found that they seem to have wired a constant DC voltage into the MAF sensor from an aftermarket converter. Are they trying to keep it out of limp mode or something?

Let me know if we need any additional info other than a proper photo this arvo. Cheers Guys .