here is a prefab for a rotating light thingy...
NOW JUST ONE PREFAB!
(OUTDATED INSTRUCTIONS - SEE UPDATE AND FILE DESC)
This is two pieces so that you can first place the hinges, then magnet the pt2 piece into place. Make sure pt2 is normal physics when done. Can be set to phased in the meantime.
just alter the brain's script for speed.
selecting the pt2 group (the spinning part) will give you access to light settings
if you need to change positioning of lights, first unweld & ungroup pt2 group, while also settinmg to phased so it doesn't fall apart. chanbe positiongs of lights as desired, then group & weld all of the pieces except for the hinge cages and brain back together. Make sure that one of the hinge balls is set to be the parent (not the one that rotates around the outside). SEt back to Normal physics.
I always turn off scripting while messing with scripted objects. Get them set, then turn it back on.