I think this is for all Futaba radios that have the square mini connector. I just ordered one. I'm not sure if it will bypass the frequency module and save battery power though. Who said it does that? I can just pull my crystal if it doesn't bypass it.
ORIGINAL: Redrum
I have a plug I got from OMP for my 9c that bypasses the module and just turns th TX on..Maybe there is one for your radio..I would check on their website.