The hitec male (S) sometimes referred to as the Universal plug as well as the JR male plug and the Airtronics (z) male plug all will plug into Futaba (J) plug rx's and female extensions with no modifications at all.

So the answer to your question is no the Hitec plug will work just fine plugged to your Futaba Rx or switch harness. Now for a Futaba Transmitter pack its a different story, some Futaba's are hard wired and some use the Futaba J plug.

The proprietary plug on all Hitec Tx's are a two conductor special plug so if you order a Tx batt pack with a hitec plug it will not fit Futaba.



John