What about these?
http://www.ebay.co.uk/itm/120903133640?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649#ht_2585wt_1020
too cheap to be useful?
nick

I bought a very similar one which was a little more expensive (£30) and it works very well. Saved me a couple of trips to the local dealer for a spurious fault which has no bearing on the Morgan. At least you can check the code quickly and decide whether its a major problem or not.