I have tried different one and it not working either. But If I turn on the power the lights flashes once eith the one I bought from Aliexpress.

https://www.rcgroups.com/forums/show...igher-voltages

check that thread
thats how i did my switch on my stuff


https://store11415794.ecwid.com/PST-...itch-p85299057

i used that controller because i was using a proline light bar capable of 12v

I have this Switch by Elechawk sold by Castle Creations: ttps://www.rc-castle.com/index.php?route=product/product&product_id=8434. Still don't know how to control or setup from my radio

The first step you need to do is achieve control of a channel with the radio button/switch you want to use as I outlined. Without this, the light controller switch won't work.

You can check the switch and lights are working by plugging it in to channel one of your receiver and using the steering to test if that will give you control of the lights. If that doesn't work, the problem is likely with your lights not being designed to run at 6V from the receiver, as many light bars are 12V.