after i did not using my Simulator for a long time, i did connect them and have update my old Profile to the current Version of X-Sim2.
Here is my momentary SFGT Wipermotor Profile for Rfactor (X-Sim2 2.1.0.13). For my Simulator it runs good, tested it with the "HistorX v1.9 Mod".
For fast response and agility of the Motors on my Sim, i use a KP Value of 30 on the AMC Board
and the Wipermotors become from my PSU a supply voltage of 15V.Perhabs you must inverted the Axis, if it goes in wrong direction.

Germany, NRW, Düren
(slow Cars and fast Cars).