As part of my current quest to do something about the woeful headlights on my car, I also want to try to understand what the setup I have is. Elsewhere I was asked whether the GU has light switching at the stalk as standard. I couldn't answer that 'cos I don't know.
Having looked at the wiring from the rear of a headlamp back. First I have a piggy back connector which crosses to the two IPF driving lights fitted by Telstra & following the wires from this in the opposite direction, through the jungle of Telstra added wires, (most of which I have no idea what they are/were for, nor whether they could be safely removed) the headlight twin wire leads to a relay as below. This is six pin relay, with Nissan marked on it. A heavier wire coming from it leads to a positive terminal at the end of the factory fuse block via a 30 amp inline fuse which I didn't know I had until today.
I'm guessing that this relay, bolted to the driver side wall of the engine bay approx 200mm in front of the firewall, probably controls both on/off & high/dipped beam at the same time somehow. Can't quite get my head around that. Could be wrong. But if that is what it does then presumably, being a Nissan part, the switching was never at the stalk on this car. Does that make sense or am I mistaken?
Does this diagram mean 2 things are switched simultaneously?
Power is supplied from this connection on the end of the factory fuse tray, presumably just a handy alternative to the battery's positive terminal?