I just finished installing the Liquifire/CunrchLab combo into my JP70 with a push-pull pot to enable splitting of the PUs.
I noticed when I switch on the bridge HB/CrunchLab (in humbucker mode, ie not split) there is a very soft humming noise coming from the amp which is not there when I switch to the neck humbucker.
The hum is only noticeable when the amp is set to a distortion sound, on a clean sound I can't really hear it.
Would this indicate that I did not ground the PU ok?
The hum is not very loud, but what baffles me is the fact that it's there when I activate the bridge humbucker but there is no hum at all when I switch to the neck humbucker.
If memory serves, the Crunchlab is basically a revoiced D-Sonic, no? If so, it's not actually technically truly a humbucker, and there is a small amount of 60-cycle hum present in normal operation.