Pulling my hair out! LED switches on/off when guitar is not plugged into effect.

[skiraly017]

I've checked my wiring several times and have used the same type of bypass wiring before with success, but this time the LED switches on and off even though there's nothing plugged into the input jack. What am I missing? Is the 3PDT switch no good? Thanks in adance for the help.

[Bernardduur]

Did ya use a stereo input (or output) jack to ground your "ground"? Else it will work anyway

[skiraly017]

Sometimes PFM is a pain.

[Khas Evets]

Are you powering it with a battery or DC adapter?