I have some RGB LED strip lights in my van. These go into a fuse box that is in turn connected to the leisure battery. Pretty standard stuff. There is also a 12v pump that is switched by a tap, also connected to the fuse box.
My problem is that when I turn the tap on/off, the lights change to a different colour, turn off, turn on, etc… sometimes you get a disco when you just want a cuppa!
I think it might be related to cable thickness, but I could be wrong as I’m no electrical. All accessories are wired with 2.5mm cable, the fuse box is wired to the battery with 10mm cable, and there are also some much smaller wires, for example the short ones that come straight in/out of the tap.
I can fix the problem by wiring the tap directly to the battery, but that is not fused/doesn’t necessarily fix the problem, and ideally, I’d like everything going to the one fuse-box
Any help/suggestions much appreciated