No. The Wii Rock Band / Guitar Hero guitar **will not work on PS3**.
| Aspect | Wii Guitar | PS3 Guitar |
|---|---|---|
| Wireless Protocol | Nintendo proprietary (2.4 GHz, custom) | Bluetooth (HID / Sony spec) |
| Dongle | None (pairs to Wii console directly) | Required (USB dongle included with guitar) |
| Button Map | Wii Remote expansion port protocol | Standard HID / PS3 controller IDs |
| Firmware | Signed for Wii only | Signed for PS3 only |
| Guitar | Games Supported | Dongle? | Used Price |
|---|---|---|---|
| Guitar Hero: World Tour / Warriors of Rock / 5 | All GH, Rock Band (PS3), Band Hero | Yes (USB) | $30–$50 |
| Rock Band 2 / 3 / Beatles Fender | All RB, GH (PS3) | Yes (USB) | $40–$70 |
| PDP Wired Guitar (Rock Band 4 era, PS3 compat) | RB4 (PS4), RB3 (PS3) | No (USB wired) | $60–$90 |
**Dongles are NOT interchangeable.** A GH dongle won't work with RB guitar and vice versa. **Keep guitar + dongle together.**
If You Have a Wii Guitar: Sell it ($20–$30) → buy a PS3 guitar + dongle. Only path that works.