H3 Expansion Wing on Hog4?

If I connect an Hog 3 Expansion Wing on Full Boar 4 all displays on wing switching off, also desk lights but all buttons and faders working fine… I have something to adjust on the FB4?
thanks for help...
thanks for help...
Comments
Had you tried holding down "Pig" + "Enable" and adjusting the brightness of the displays with the faders on the xwing?
Glad you are up and runnning.