AB Box: dual color Led and 3PDT wiring help

[Gargaman]

All right, this may be a real dumb one, but I'm stucked here again.
I want to make a passive AB Box (JHS mini AB like) with a 3PDT and a dual color LED (three terminal).
I believe this wiring would work:


It's only one LED. GREEN is to represent the OUT A path and YELLOW to represent the OUT B.

I used 2/3 of the 3PDT to switch, making the unused output grounded.
The other 1/3 is for the led circuit.

I intend to use two AA cell to power the leds but I would like to turn this thing off without removing the cells.
The stereo input came to mind.   
Is there a way to use the 'stereo jack trick on the input' to make the led circuit on and off?
Is it just a matter of thinking the 3PDT as whole instead of the DPDT+SPDT arrange?
I mean, can I make the grounds all together without messing aroun the signal and the LEDs?
I'm a begginer that makes begginer mistakes. I recently build a ruby with a status LED that is dimming when I play, so maybe I need some schooling on this area.
Extra: meanwhile, I found this thread
http://www.diystompboxes.com/smfforum/index.php?topic=80530.0
where Thomeeque says something about an enhanced millenium bypass. How could this be possible?
I use the Millenium on my builds (3pdt really expensive here). I understand how it works ( not enough to explain it yet, but...)
thanks
best regards

[TejfolvonDanone]

Is there a way to use the 'stereo jack trick on the input' to make the led circuit on and off?

If you switch on of the jacks to a stereo and connect the ground coming from the LEDs to it's ring you can only turn on a LED when THAT jack is plugged in. If you switch all the jacks to stereo you have to connect in series all the rings and sleeves to make sure the LEDs only turn on when ALL of the jacks are connected. Like this:
IN sleeve to ground, IN ring to OUT A sleeve, OUT A ring to OUT B sleeve and finally OUT B ring to LED ground.
The drawback is that the grounds aren't connected always so if you use only IN and OUT B their ground isn't connected in the circuit.

Is it just a matter of thinking the 3PDT as whole instead of the DPDT+SPDT arrange?

3PDT is 3 SPDT switch controlled by one button. So you can think of it as 3 SPDT but none of them can be switched individually.

Extra: meanwhile, I found this thread
http://www.diystompboxes.com/smfforum/index.php?topic=80530.0
where Thomeeque says something about an enhanced millenium bypass. How could this be possible?
I use the Millenium on my builds (3pdt really expensive here). I understand how it works ( not enough to explain it yet, but...)

In the Millenium you just use the output resistor to ground and the switch to give a signal which is 0V or open circuit. This signal controls a FET in switch mode. Open circuit means the FET is off and no current goes to the LED. 0V turns it on and the LED lights up. I can't really see how can you use it here.
Maybe you can create a FET switching system to swap the 3PDT to a DPDT or SPDT. Like in the Boss pedals. Search for geofex i think there's a good explanation on the boss bypass system.

[Gargaman]

Thanks, Danone
1 - Ok. My goal is simple to switch it on when I insert the input. I'll make the input jack stereo, connect the ring to the led's ground. Can I connect the cell negative to any ground, let's say, together with my out A ground? Simple like that? I'll post another pic rewired.

2 - Yeah, I understand the mechanical way. Sorry about this sentence, it wasn't clear enough.

3 - Yes! Good explanation, thanks. Me too, I can't see how would a DPDT work here. Creating a FET switch is too much for me by now.
There it is : http://www.geofex.com/Article_Folders/bosstech.pdf
I'll take a look too.
Thanks again
regards

[Gargaman]

Is that all right?

[TejfolvonDanone]

1 - Ok. My goal is simple to switch it on when I insert the input. I'll make the input jack stereo, connect the ring to the led's ground. Can I connect the cell negative to any ground, let's say, together with my out A ground? Simple like that? I'll post another pic rewired.

Any of the sleeves is good for the negative of the battery since they are all connected. It's simple like that. The pic looks good to me.

Creating a FET switch is too much for me by now.

I can understand that. It involves a lot of cuircitry and in a simple A/B you also have to put a prefboard/vero/PCB/point-to-point-wire-thingy in there. Just too much. Its good if you already have somewhere you can stuff your components.

I'm glad i could help you.

[Gargaman]

Thanks, mate!
cheers