On SCR trucks you have to eliminate !A bypass contactor closing. then you need to set the top SCR speed. Be warned the truck will overheat if ran for long distances or heavy load. The SCR system was not designed to be the primary drive control. The !A bypass allows the SCR system to cool off.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.