So, recently I decided to swap out the stock pickups on my G400 with EMG HZ H4\H4A set. I also decided to get a new three way switch to go along with it. So I get everything wired and everything looks fine. However, the output on the pickups are very low. Another thing is that when the selector switch is unscrewed from the body the output goes up to what it should be. There is also a loud squealing noise that happens sometimes if I'm not touching the selector switch. I wired everything to the EMG diagram and now at this point I'm stumped. Only thing I can think of is it probably being a grounding issue somewhere but I just can't figure out. Any help would be appreciated.