d'oh! I stand corrected!

...any I did eventually find it, spookily enough near some socks!

Just tried to remove the top of the dashboard fascia to get behind the remote display to plug in the adaptor (And to scope out a potential place for the tuner), but i've got to remove a heap load more internal bodywork before I can remove the dash, so now I'm going to leave it until I get the tuner kit.

Adrian