Hi, I have an old Aria Pro bass that I got for nothing, old and very beat up. (see picture. Not mine but exactly the same model) Been restoring it, mostly for fun and for the learning experience, learning to spray paint and so on. Now the electronics. I'm going to use the original pickup that was in the bass, some big soap bar style pickup but with a nice sound, and I have also added a mini humbucker in the neck position. These I want to use with 1 volume control and a 3-way switch. No tone control. Could someone please help me with a simple diagram or description for the best way to do this? Thanks!