Hi,
So coincidentally I ran into this post and I'm looking to do the same as the original poster. Different model mixer, but powered exactly the same with no power switch.
My question is this...and pardon the ignorance.
I can not find the particular style switch as a 2 pole single throw (can only find SPST) so I was curious (insert said ignorance), would it be ok if I wired both 18V (as the OP shows in his diagram) from the power source to the single pole on the switch and then out of the single pole on the switch to each individual + soldering point on the board.
I considered running two single pole switches, but I'm not too fond of the idea of mounting two switches. One of which will never really be touched.
I've attached a quick sketch of what im thinking!
Let me know if I'm likely to blow up my mixer and accidentally set my condo on fire.