never had a generator problem with this truck... now the light came on several days ago... my wife uses the truck to get to work (1 mile away)
'don't have a repair manual, but have checked:
*the battery: 12.67 V - does not change voltage when the engine is revved
*fan belt for the generator: it's tight and it spins the gen.
*the voltage regulator: the bottom "coil" connects to the battery and then pushed in the GEN light goes out, but the voltage does NOT increase (at the battery) when the engine revs

...so, how do I check the VOLT.REG, and GEN to determine which is not working properly? Is there a way of "adjusting" the VOLT.REG.? I'm "in-the-dark" without "maintenance procedures" - I'm willing to fix it, I just don't know how...
Thanx,
Ron