Possible Alternator Overcharging
Ha! One of my friends just informed me that the 1154 is for 6v applications. Turns out the running light filament won't, indeed, stand up to 12.7v. But the other (probably the brake light filament) will. All makes sense now.
In the spirit of helping out someone else, here's what PSI Conversions/GM says about the IF and L connections:
Generator F grey wire C2 32 field duty cycle
Generator L brown wire C2 61 Gen L turn on lamp
A voltage regulator is part of a vehicle charging system having an alternator or generator and field winding and connected to a vehicle battery and devices for supplying a voltage and powering vehicle devices. The voltage regulator includes a microcontroller operative for monitoring output voltages representative of monitored load changes within the vehicle. A power output circuit is operatively connected to the microcontroller and connects to a field winding. The microcontroller is operative for changing the field duty cycle of the generator or alternator by turning ON and OFF the power output circuit in a predetermined manner as established by the microcontroller based on monitored load changes.
Generator F grey wire C2 32 field duty cycle
Generator L brown wire C2 61 Gen L turn on lamp
A voltage regulator is part of a vehicle charging system having an alternator or generator and field winding and connected to a vehicle battery and devices for supplying a voltage and powering vehicle devices. The voltage regulator includes a microcontroller operative for monitoring output voltages representative of monitored load changes within the vehicle. A power output circuit is operatively connected to the microcontroller and connects to a field winding. The microcontroller is operative for changing the field duty cycle of the generator or alternator by turning ON and OFF the power output circuit in a predetermined manner as established by the microcontroller based on monitored load changes.
