The warning light means the alternator is not producing power to send to the battery. The light is grounded thru the alternator and once the alternator starts charging the voltage reverses and the light goes out. You should test the alternator output on the truck and there may be a problem with the wiring.
Answers & Comments
The warning light means the alternator is not producing power to send to the battery. The light is grounded thru the alternator and once the alternator starts charging the voltage reverses and the light goes out.
You should test the alternator output on the truck and there may be a problem with the wiring.