Eml synthesizers

OK I've scoured these posts (& those on Analogue Heaven & elsewhere) and it seems that 
the best way (the only way?) to control an EML-101 properly from a CV/gate sequencer is 
via the keyboard socket, as the external control jacks only control two of the VCOs.

Unfortunately I've not found a conclusive/definitive way of doing this, partly because there 
appear to be variations on the keyboard socket & wiring (mine is an odd 5-pin reminiscent 
of a DIN plug). I don't wish to be able to play the 101 when it's being sequenced, so ideally 
would plug the sequencer into the keyboard socket - what are these plugs/sockets called?

I know that the EML-101 is 1.v/octave although I'd think that a CV sequencer like the 
Korg SQ-10 would work fine, since each note is set manually. 

So...how do I do it?

Matt

PS of course in a perfect world I'd buy the 400/401 if:
a. I could find them
b. I could afford them