24VDC Relay switching with just Three 9V batteries?

[bcmatt]

Ok, this is probably a weird question, but it is a guitar amp related project...
It's for a little leslie module:

I had an old crappy Transistor Acetone Organ that had some key issues. I ended up gutting it for parts and specifically hoping to make some guitar speaker cabinets out of it:
http://yeomansinstruments.blogspot.com/ ... binet.html

The second pic has the Leslie Module on the bottom right of this photo that I want to transplant into it's own little unit.

Here's is the little hammond connection box in the form of a blurry 15 second video (I know; I'm weird):
http://www.youtube.com/watch?v=ejKbvwruaSA

From the top of the chassis, the red wires go to the AC mains for the motors and the blue and black wires are connected to the speaker, so I will connect those to an insulated speaker jack to connect to an amp.

At the bottom of the chassis is the two relay wires (+ and -) that are meant to switch leslie motors (and therefore speeds). What I am trying to figure out is the best method to simulate this Off and slow and fast leslie speeds within a footswitch housing.

I imagine the PS PCB of the organ provided the current needed for the relay, but I am wondering how to produce that in this package without that whole board (currently across town too).

Would something like 3 9 volt batteries in series do the trick and would they just need to momentarily flash the relay through those wires to switch it? Is that how a relay works? Or do I need to get way more complicated than that? How fast would those batteries be drained if it did work?

[ToneMerc]

Off the top of my head I would say that a 555 timer IC could be used to trigger the relay on and off.