Hi,
I suggest you to buy the original Hitec trainer lead (NOT the Futaba cord) : not expensive compared to Futaba. If you really want to have a home made lead, then I suggest you to check the one and only alphabetic compilation of RC and model related addresses :
http://homepages.ihug.co.nz/~atong/
look for the words "trainer cords" and "buddy".
Also here if I dare :
http://www.rcgroups.com/forums/showt...&threadid=5725
I also would suggest you to read specifically my website chapter 3 about Hitec and have a look at chapter 7 for a suitable trainer lead.
Hope it helps,
Olivier