Wiring Issue Headlamp not working Continued...
If you have working dome lights and parking lights, then the ammeter should be showing 5 to 8 amps discharging from the battery.
Is it ?
If so. Measure the voltage at battery and the voltage at the alternator's BAT terminal with the lights on.
Are they the same?
A more precise way to do it is measure the voltage difference directly.
If there is a voltage difference with 5-10 amps going through, then there is a bad connection between the main splice and the battery.
If there is voltage difference measured the first way, but not the second way, then suspect bad ground connections.
Final note, if the battery is getting run down, charge it on a charger.
Do not use the alternator to charge a battery when the battery is really low.
A low battery will draw a lot of current and as mentioned before, having 25 to 40 amps or more through the charge circuit for more than a brief period of time will damage stuff.
If you have working dome lights and parking lights, then the ammeter should be showing 5 to 8 amps discharging from the battery.
Is it ?
If so. Measure the voltage at battery and the voltage at the alternator's BAT terminal with the lights on.
Are they the same?
A more precise way to do it is measure the voltage difference directly.
If there is a voltage difference with 5-10 amps going through, then there is a bad connection between the main splice and the battery.
If there is voltage difference measured the first way, but not the second way, then suspect bad ground connections.
Final note, if the battery is getting run down, charge it on a charger.
Do not use the alternator to charge a battery when the battery is really low.
A low battery will draw a lot of current and as mentioned before, having 25 to 40 amps or more through the charge circuit for more than a brief period of time will damage stuff.