https://twitter.com/gswitz/status/910659703172198400

Other links to images on my Twitter account.

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If you have no luck with an output, mic it up. We did that with an old Farfisa organ a few years back thinking it would sound like crap, but it sounded amazing in the mix! The crappy speaker added to its character.  

Yes it has a line in but not a line out.
 
Yes, it appears to use different speakers even depending on the sounds being used.
 
No there is no headphones jack.
 
Yes, I can mic it, but the musician notes the loud keys. The volume doesn't go up very high, so the clackity clack of the keys will definitely be picked up. The speakers aim at the keyboardist around his feet (beneath the keys). 
 
He points out that the keys are great from sliding your hand along, but it does make a good deal of noise that way.
 
He says we can break the whole thing open and go use some solder, but... I'd rather play than tackle complex projects on old gear.

What is the exact model number of the organ.  Has it got that big round connector designed to connect to a Leslie speaker by chance.  If it does then the signal is actually on that connector.  Might just need a lead.

+1 to what Jeff just said, Real Hammond's had this multi pin connector so as to control the spin and speed of the rotating speakers without the cabinet they where dead in the water. If not you have a home model and it probably isn't the sound anyone playing Rock or Blues would be after,, more a church sound on those. 

I have a friend that long ago bought an old Hammond, and it needed special adjustments since voltages everywhere was really high.

Yes, be careful; those are tube-level voltages that will require a pad (voltage divider). Here's how to do it: http://www.dairiki.org/Ha...iki/LineOutFromASpinet
 
If you don't want to go the DIY route, here's a company that sells a line out adapter for a hundred bucks.
 

Wow, thanks everybody! I'm going to go visit the Organ again this weekend and see what I can learn. There were definitely high voltage warnings on the back. My friend said he picked it up several decades ago for $100 so I doubt it's the high-end type but doesn't mean we can't do fun things with it! :-)
 
I'll try to get a model number.

Sounds like it might not be the pro model with the Leslie connector perhaps.  Even so a technician should be able to get in there and find the audio signal.  It is floating around and without any high voltages present.  It is just a matter of knowing where it is.  Going into the volume expression pedal would be one place to look.  There will only be a mono power amp in there as well I would suggest so it is just a matter of picking off the signal that is going into that. Bringing it out to a connector of some sort.  A good tech will check for any DC voltages present on the audio as well and if there are, an isolation capacitor/transformer could be used.