Having bent them up, they're tinned with a fine point soldering iron (I use a temperature controlled one that cost under £20 from Maplin's.) Then tin the end of a second piece of wire and, gripping one end of the previous wire in the jaws of the vice, put the second wire roughly in place, but accurately in the centre and touch the joint with the iron.
Oh, BTW, the nose of the Ginetta G15 on the lamp base is of the rarest white metal model in world in that is the only white metal version of a resin model that was in my old Guild Master Models range of classic cars. Mastered in brass, but never produced in w/m, apart from this one.
Do the same to the other end and then clip off the excess with the cross cutters. By leaving about 8mm on the column you can grip that in the jaws and clean up with knife and Swiss files. Finally clip off the yoke "handles"and any column excess poking towards you, cleaning back with a fine file.
Sorry about this picture, but my camera only does bright sun, mostly, but you can see the end result.
The instrument panel for the Pilatus PC12 master is made of Ureol and partially detailed with 5 thou. styrene. The bulkhead and seats are also styrene as both will be cast in resin. The steering yokes will be white metal, I assume, for strength.
Time? About 10-15 minutes.