Bambu Lab A1 hot end mounted on KP3S

When using the Bambu Labs A1 parts cooler I need to disassemble it, take out the board and transplant the 5015 blower.
I could not work out how to wire the 4 wire fan to the kp3s.
It might be easier to design a bracket to mount the 5015 blower.

Don't forget to offset the Z limit switch!