Today I came across a Chinese control that incorporates the ws2801.
If you look at the pattern, you will see that the resistor of 1.5k goes to + 12V.
It is very interesting because the Data Sheet said that ws2801 maximum 7v.
I do not know whether it was a mistake in the Data Sheet but control has been operating for godinuna days without problems.
In this scheme better evokes gate feta
How to control at 12V, + 12V to be of 8V to 10V. Everything depends on the molten WS2801