[jeffburkett]

My dome light, gear indicator light, radio, gear select for 4 wheel drive, tach,speed and lighters will not work. Can a light switch
Be the problem

[TxGreaseMonkey]

Unlikely. Instead, test all under hood and under dash fuses with a test light or multimeter.

[RickMN]

In the old days, switches actually switched power to those lights. However, in late model vehicles, the switches just act as a signal to the body control module and it's the control module that switches power. Or, the control module provides ground to a relay that switches power.

So without the year of your vehicle and the engine size, it's pretty hard to look up the wiring diagram to see what you've got.

[Handyman2007]

Either on or near the light switch is a dimmer control that may have a manual on/off position. Check it.