If you're having trouble starting your truck, it's likely a problem with either:
* The Neutral Safety Switch (NSS): This is part of the transmission and is often the culprit. It's integrated and replacing it usually requires some mechanical knowledge and possibly specialized tools.
* The Starter: A faulty starter could also prevent the truck from starting regardless of gear selection.
* Wiring: Problems with the wiring between the NSS and the starter could also interrupt the starting circuit.
* Ignition Switch: A failing ignition switch can also lead to starting issues.
In short, you won't find a separate "neutral switch" to adjust or replace. If you have starting problems, you need to have a mechanic diagnose the underlying issue. They'll be able to determine if it's the NSS, starter, or something else.