Weird noises from...limit switches?

[telltalehart]

Hi guys! Just finishing up my carve king build. Everything is more or less assembled, and I’ve just finished the wiring. Voltages on the driver boards are dialed in. The machine jogs correctly and the steppers seem to be working great. There is, however, a weird whine. It seems to be coming from the limit switches but I am not completely sure. Is this normal or should I investigate loose wires or something?

[dadof4]

Stepper motors?  They can be noisy even in the idle state. 

[Derek the Admin]

Dadof4 is right. The homing switches shouldn't make any noise at all.

[telltalehart]

Definitely could be it. pretty hard to locate exactly. Good deal. Thanks!