Newbie question about joining wires together in feedback loop pedal/ hum debug

[Greg Octopus]

Hello,

totally newbie question, I'm sure, but I'm making this:


Looper With Feedback Loop by Doctor Tweek, on Flickr

I've nearly finished the wiring but am confused about the black wire that runs from sleeve on input via sleeve on send which then appears to combine with a wire from lug 8 on the 3PDT switch and finally end on sleeve of the output. I'm not sure how to connect it all together.
I think I might have to put a wire from the input sleeve to send sleeve, then connect another separate wire from send sleeve to the return sleeve, then another wire from the return sleeve to the wire from the 3PDT switch and solder their ends together and then solder in a third wire from this junction to the output sleeve. Is this correct? Or is there some more efficient way to do it?

Hope my description makes some kind of sense!

Thanks.

[alparent]

These all connect to ground. The importante part is that they all connect. Depending on how you place stuff in your enclosure. You will see what way is better.
But yes it will be a wire from one point to another and then another wire from that point to the other. Like joining the dots.

[Greg Octopus]

so it's ok to join 3 wires together in one junction?

[Paul Marossy]

so it's ok to join 3 wires together in one junction?

Yes

[armdnrdy]

You can do it one of two ways:

alparent is correct: "The importante part is that they all connect. Depending on how you place stuff in your enclosure. You will see what way is better."

Point to point (jack to jack to....ect)

Then there is the "star" ground when you bring all of the ground wires back to one point. The star ground is better at keeping any  noise from the power source out of the signal by not looping through everything. It gives all of the grounds a direct path back.

[Greg Octopus]

Ok, thanks, going to try finish it off now.

[Greg Octopus]

Woo! It works. Getting some really good noises.

But... when I plug in the power, I just get a loud hum. I know the power is only necessary to power the LED, but I'd like that to work. When it's plugged to the electricity, the effect doesn't work at all, no clean sound, no feedback sound, just the hum. I've checked all my connections are in the right place and they seem to be. I've tested the LED with a multimeter, and it lights up (checked in various places including from the two terminals on the power supply).
Does anyone have any suggestions? I'm sure it's something really simple.
Also how would I add in a 9V battery as an alternative power supply?

Thanks in advance.