Need some help ASAP with Bassmods pre

[Jerry Ziarko]

I have a Bassmods pre from an EF5 that I am selling to someone locally. I marked the wires when I removed it long ago and took some photos, but for some reason the black battery wire must have come undone. Also, in the middle of my photo there is a yellow wire that connects to a black wire that has me puzzled. If someone could remove their back plate and snap a photo that would be a huge help.

 

[Jerry Ziarko]

Got it all working but that yellow center wire still has me puzzled. I'm thinking bridge ground?

 

[rojo412]

All the yellows I can see in the pic do lead to grounds, so you're probably on the right track there.

I also ran into questions when dealing with one of these preamps. Of course, BassMods was silent when it came to ANY help at all. So if you do find anything out about these, when it comes to wiring and/or color with them, it would be very cool of you (or any other users of them) to share any findings. They are decent preamps, but the documentation on them, as well as customer support from the maker, is very rare.