Hello all, I am wondering if you can help me out with something. Today while my wife was driving the check engine light came on. The code is P0380. This is the code for the glowplug circit a/heater. I have found some info on this over at VW Vortex and it seems like the smartest course is to change the GP wire harness and the plugs themselves. Has anyone done this themselves? Is it difficult to do? Any information you can provide would be of great assistance.