Hello My first post here. Hope any of you can help me figure this out, thanks. I recently bought an FGN JMJ-ASH-DE-M bass which has active EMG PU's. Link for specs: JMJ-ASH-DE-M / FGN Guitars While I love everything about the bass I wanted to replace the PU's with passive electronics instead. So "easy thing" I thought as EMG has solderless solution and I have no skill with soldering. Therefore I purchase a EMG SJHZ and a EMG MMHZ as replacement. Links: SJHZ MMHZ Little did I know that there was no wiring kit included. So I started to research which wiring kit to get and learned that I had to find one with 250k or 500k pots as they are used for passive PU's. Then I purchased the "EMG 1 or 2 Pickups HZ Wiring Kit" from Thomann (as I'm located in Europe) which has 500k pots - However, the pots themselves states both 250k and 500k on them? Link: https://www.thomann.de/intl/emg_1_or_2_pickups_hz_wiring_kit.htm So I followed the manual from EMG's website and connected everything as instructed and...nothing happened. Manual: https://www.emgpickups.com/pub/media/Mageants/m/m/mm_hz_instructions_0230-0262.pdf I went through all the wiring and the manual once more and it was still the same. No sound at all. After troubleshooting for awhile I tried to switch the black and white connection on JACK input and then it worked! But, only learn that the sound was extremely treble and if I turned both volume knob all the way up it sounded like only the neck PU (SJHZ) worked. If turned one of the volume knobs down (even just a bit) it sounded like only the bridge PU (MMHZ) worked. Electronics are grounded as instructed in manual. Battery connection is removed. I have no idea what went wrong here, so I hope any of you can shine a bit of light on the issue. Thank you.