Passive to Active - Battery Wire Question

[WeBowInItsAura]

So today I finished wiring up my new BKP Aftermaths, but am very disappointed to hear some ground hum when I'm not touching the strings or bridge. I've tried re-soldering connections and cannot figure out what is causing it! I didn't change the Output Jack when I got the new pickups (I just left the stereo jack), so I'm wondering if I need to disconnect where the battery was connected to the output jack or just leave it? I'm going to try getting some new wire and trying again in the morning but really don't want to bring it to a tech just to solve this ground issue. Anyone have any ideas!?

 

[potatohead]

Did you ground the bridge? Actives are self-grounded and if you didn't add a ground wire from the bridge when installing the passives, you will need to.

 

[Mordacain]

Did you ground the bridge? Actives are self-grounded and if you didn't add a ground wire from the bridge when installing the passives, you will need to.

Yea, the ground wire question here is where I would look first, but I would rewire with a mono jack myself. I'm not sure if the battery could introduce hum without feeding a preamp.

 

[WeBowInItsAura]

Did you ground the bridge? Actives are self-grounded and if you didn't add a ground wire from the bridge when installing the passives, you will need to.

Well, I didn't add a ground to the bridge myself. But I did ground a wire that I thought was the bridge ground. I mean, I have no idea what else the wire could be because its going through its own little hole towards the bridge area and its NOT the battery wires... I have an Agile Septor 727 if that tells anyone anything.

How hard would it be to add a bridge ground wire with a hipshot bridge?

 

[Fretless]

Well, I didn't add a ground to the bridge myself. But I did ground a wire that I thought was the bridge ground. I mean, I have no idea what else the wire could be because its going through its own little hole towards the bridge area and its NOT the battery wires... I have an Agile Septor 727 if that tells anyone anything.

How hard would it be to add a bridge ground wire with a hipshot bridge?

An unshielded wire bridged between the bridges connected to the ground of the circuit works. Can you draw your circuit please including the stereo jack config.

 

[WeBowInItsAura]

Thanks for the responses guys I will mess around with it and try and ground the bridge as well as probably get myself a mono jack! Besides the hum this BKP Aftermath is pretty killer coming from EMG 707s... Passives all the way!

 

[WeBowInItsAura]

An unshielded wire bridged between the bridges connected to the ground of the circuit works. Can you draw your circuit please including the stereo jack config.

I drew up a quick sketch in paint. Also I don't have a neck pickup at all at the moment...

EDIT: The hexagonal shape on the tone pot is my Capacitor. And I also forgot to draw in the wire that I grounded that I am pretty sure IS my bridge ground! That wire was sodered to the back of the volume pot as well.

 

[Fretless]

Try soldering the black and bare to the tone knob and do not bridging the volume and tone pot. Rather than ground the cap, send the end you grounded to the middle position on the volume knob. Then let me know.


Uploaded a mod of your pic. Sorry if it's confusing. It's hard to draw in between taking 911 calls

 

[Baelzebeard]

Don't worry about a mono jack. Just solder the ring and sleeve terminals of the jack together, that will effectively give you a mono jack.