I installed, or I should say, tried to install an Aguilar OBP1 preamp in my Warwick Streamer LX 6 (Basslines soapbar pickups) Issue n°1 : no sound when the balance pot is in central position. when I unwire the red cable on the balance pot (see the first drawing on www.aguilaramp.com/html/support/downloads/diagrams/diagramobp1.htm ) i get some sound, but I think it's "wrong". Issue n°2 : The sound is distorted! Issue n°3 : No idea how to ground the whole thing. but when I touch a pot, I can hear a lot of radio stations thanks for helping me.