One way to think about shift linkages in a truck with a 5X4 set up is that the trans connected to the bell housing has the shifter mounted on the top of the trans and there is no visible linkage. The other trans mounts behind the main trans....usually connected by a short driveshaft, has an external linkage connected to its shifter. In the cab the shifter for the main trans is closest to the driver and the aux. shifter is to the right and maybe a bit behind the main shifter. At least that is the way it was in all the ones that I have driven.