* Waiting for the Wait-to-Start system: Before starting the engine, you need to wait for the glow plug indicator light to go off. This isn't a switch, but a necessary step. If the truck won't start after the light goes off, the problem is likely elsewhere (fuel filter, fuel pump, etc.).
* Troubleshooting fuel system problems: If you're having fuel delivery problems, you won't find a simple "reset" switch. You'll need to diagnose and fix the underlying issue, which might involve checking the fuel filter, fuel pump, fuel lines, and potentially the injection pump.
To resolve starting or running problems, you should consult a repair manual specific to your 1995 Ford F-350 diesel engine (either a 7.3L Power Stroke or a naturally aspirated IDI engine). A mechanic specializing in diesel engines will also be able to help you diagnose the problem.
