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Spirit 2 and Radiomaster RP3-H wiring
Posted: Tue 24. Feb 2026 12:28:47
by Shanew06
When wiring the RP3-H for the Spirit 2, the SYS port is required, however, to configure the Spirit 2, the SYS port is needed to connect to the PC.
I have tried using a Y harness to have both working, however the Spirit Configuration software cannot successfully connect to the Spirit 2 unit when the Y harness is used.
How can I connect both the Spirit 2 to the RP3-H and to the laptop configuration software?
Many Thanks.
Re: Spirit 2 and Radiomaster RP3-H wiring
Posted: Wed 25. Feb 2026 13:06:11
by davehour
Hi,
Is the Y harness cable twisted?
Twisted cable didn’t work for me but flat cable did.
Thanks,
David
Re: Spirit 2 and Radiomaster RP3-H wiring
Posted: Wed 25. Feb 2026 13:13:33
by davehour
For Your Reference
I installed a short Y extension to connect the WiFi Link permanently to the Spirit Unit SYS Port and still have a connector to connect the USB Link without having to disconnect anything.
Had to use flat cable because with twisted cable, it didn’t connect.
More information here:
viewtopic.php?t=6532
Re: Spirit 2 and Radiomaster RP3-H wiring
Posted: Thu 26. Feb 2026 1:00:28
by Shanew06
Thanks Dave. That's pretty strange about the cable, I'll have to try a short, flat one and see if I have any luck
Re: Spirit 2 and Radiomaster RP3-H wiring
Posted: Wed 04. Mar 2026 19:51:58
by ZeXx86
Hello,
you can use old wiring that is using AIL/RUD pins. However integration connection might be not perfect. Telemetry will work fine.
If using SYS port, it is needed to remove the cable and then power up - then configuration will work over the USB or Wifi-Link.
Unfortunately there is no other way with Spirit 2. More recent units are using AIL/RUD pins always, so this limitation is not present.