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rotorwrench · 08-10-2019, 05:57 PM

If the generator has a cut out relay then it's a 3-brush type. The cut out is only there to bring the generator on line after the engine starts turning it post start up. It works off residual magnetism from polarizing the generator field shoes.

These old systems only put out a limited amount of current to keep systems operational and charge the battery. When you start adding in a 6 to 12-volt inverter, it takes even more amperage to run the head lamps than normal and they already tax the system normally. If your going this route, you should consider converting it to a one wire alternator so that it can generate enough current to run those lights and the inverter.

LED headlamp bulbs don't focus well in the headlamp reflector so be aware that they may be brighter but they may not have any reach for distance in front of the car. Halogens would likely do a better job but you may want an alternator either way.

08-10-2019, 05:57 PM	#12
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,440	Re: Generator question If the generator has a cut out relay then it's a 3-brush type. The cut out is only there to bring the generator on line after the engine starts turning it post start up. It works off residual magnetism from polarizing the generator field shoes. These old systems only put out a limited amount of current to keep systems operational and charge the battery. When you start adding in a 6 to 12-volt inverter, it takes even more amperage to run the head lamps than normal and they already tax the system normally. If your going this route, you should consider converting it to a one wire alternator so that it can generate enough current to run those lights and the inverter. LED headlamp bulbs don't focus well in the headlamp reflector so be aware that they may be brighter but they may not have any reach for distance in front of the car. Halogens would likely do a better job but you may want an alternator either way.