Ok, I got my injectors. One has a wire on it which if I remember is for the timing for the ECU, right? How does it work? Does it just make a connection, is it piezeo? I'm just thinking it would be really handy to put in Cyl 1 of my future M-TDI to be able to use the signal for a timing light as once installed, it is very hard to get the dial indicator screwed in. But I need to know exactly what it does first.