Hey all, this is my first post, so please understand if my question is silly or obvious- I just bought a 2008 5120 on CL and it's a lot of fun. I had a 5125 many years ago and just loved the Dearmonds on it, but I've always wanted that orange stain, so I bought this guy for low $$$s with a Surf 90 swap in mind after reading about them on here. I got a Surf 90 bridge pup delivered just the other day and put it in (hillbilly style for now). The pickup works, in that it makes sound, but it seems very thin compared to what I was expecting from a semi-hot, p-90 style. The remaining Gretschbucker in the neck is significantly louder at the same amp settings (testing through a little 60's Silvertone tube amp), and overdrives readily, while the Surf 90 in the bridge doesn't seem to have much character or hotness at all. I checked the ohm readings on both from the jack, and they checked out for what I was expecting (Gbucker neck: 8.1 Surf 90 bridge: 7.74) I've got a custom Esquire build with a single coil TwangKing in it that just screams at the same volume levels, which is something like what I hoped the 90 would do. I know that there are varying opinions on GFS pups, but most of what I read made me think they would have at least some bite. The Surf 90 is raised as high as it will go. A few unique factors: Excited to get the new toy wired up, I used jewelry solder from my silversmith girlfriend's workbench for the initial try. I've since learned that this isn't ideal. I went and got some 60/40 rosin core now that I can replace it with, but my impression was that if this was the problem, I'd be getting a bad read off the multimeter. The Surf 90 came with three wires instead of the two I was expecting. They are listed on the little info card that came with the pickup as Red= Signal +, White= Signal Ground, Black (actually just unshielded silver)=Pickup Shield Ground. After reading around a little, I just treated the red as hot and "black" as ground and wrapped some electrical tape around the white wire (which I guess is used for coil tapping?) Should I be doing something with the "Signal Ground"? Finally, I short-cutted with the hillbilly splice. I know that this is mostly looked down upon, and I do think I'll drop the pots and do the full job eventually, but I'm curious if the shortcut could be contributing to the seeming weakness of the Surf 90. Whew! That was a lot of info, so thanks to anyone who made it through, and particular thanks to anyone who can provide any assistance or advice!