Hi, This will be my first time changing pickups so please excuse any stupidity. I had been gathering information and diagrams online, prepared for when I got home to my guitar only to realise the wiring looked nothing like any diagram or tutorial I had seen. My RG421EX (2018 model) has a 5-way selector, 1 volume and 1 tone knob. I have bought the SD Nazgul/Sentient set to put in it. The first thing I noticed when first going to add the pickups was that there were 5 wires on the Nazgul whereas there were only 3 on my stock Ibanez bridge pickup. Also the selector is an Ibanez 3SWLSC, which looks different to any I had seen online before. I have made a diagram of the current wiring below, please excuse that it looks like a child drew it: The dotted lines are the other wires that do not come from the pickups. I found this diagram below online from another forum (for installing the same SD pickups) which almost helps me understand it, I just have some questions: (Credit to Grendel2000 on TheGearPage, I would link but I only registered today) Firstly, it looks like two pairs of wires are joined together at the solder points on the bridge side of the selector along with the red, but then there is a bridge ground wire going to the volume knob. I'm sure I am misunderstanding this since that would require 6 wires. Also, this diagram doesn't seem to show the neck pickup being wired to the volume knob at all, whereas there are two wires from the neck to the volume in my stock wiring setup. How could all 5 wires be connected to the selector when there needs to be some going to volume? Maybe this diagram is not suitable for my guitar since at the top-left side of the image it shows the 4th switch option being parallel connected (blue) whereas mine are coloured red on Ibanez' website for that option? Being the same selector I thought it would be. Here is the colour coding for Seymour Duncan humbuckers, which I am confident is the same as mine: I did notice there isn't a fifth wire in this diagram, but I am guessing that is because it's a bare wire? I am also unsure of the Ibanez pickups' colour code compared to this SD diagram, so if someone could figure this out from my diagram I'd appreciate it very much. I have looked it up and found nothing yet. Again, please excuse me if these are ridiculous questions. Sorry if this is an information and question overload. I'd be really grateful if anyone could explain this for me, thanks in advance!