It's pretty easy - just take off the crappy old XF one (yuck!) along with the plastic boss behind it. Then just screw the plastic boss to the the back of the EB wheel (this enables your indicator returns to work) and bolt the wheel on!
2000 Crown Victoria, perfect condition , 46500 miles. Modifications include Vortech supercharger which required some modifications, Magnaflow exhaust, Edelbrock camshaft, Keith Black pistons and rings, K & N cold air intake.