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<blockquote data-quote="stones" data-source="post: 1321293" data-attributes="member: 540734">Dimming means there is a voltage drop.Slight dimming is no big deal, a 1/2volt drop will cause a visible difference in your headlights but so long as the system is running in the 12 to 14 volts range everything should be OK.Severe and repeated voltage drops(below 12volts) can damage your vehicles engine management hardware (computer), If your vehicle is an older model with a carburetor instead of fuel injection then that does not apply.Severe dimming also means that your alternator is working like a little girl in a Chinese horehouse and will burn up its bushings faster.Recommendations(these will help ease the stress on the alternator)-Add a second charging lead from the alternator to the battery&#039;s + (add, dont replace).-Add a second ground wire from the engine block the vehicles frame/chassis.-Add a second ground wire from the negative battery to the vehicles chassis(sheet metal on fender)Use a minimum size of 8 gauge wire for upgrades, make sure all grounding points are clean bare metal for best possible connection.If these do not work well enough you will have no choice but to upgrade your alternator to one of a greater current output.</blockquote>

[QUOTE="stones, post: 1321293, member: 540734"] Dimming means there is a voltage drop. Slight dimming is no big deal, a 1/2volt drop will cause a visible difference in your headlights but so long as the system is running in the 12 to 14 volts range everything should be OK. Severe and repeated voltage drops(below 12volts) can damage your vehicles engine management hardware (computer), If your vehicle is an older model with a carburetor instead of fuel injection then that does not apply. Severe dimming also means that your alternator is working like a little girl in a Chinese horehouse and will burn up its bushings faster. Recommendations(these will help ease the stress on the alternator) -Add a second charging lead from the alternator to the battery's + (add, dont replace). -Add a second ground wire from the engine block the vehicles frame/chassis. -Add a second ground wire from the negative battery to the vehicles chassis(sheet metal on fender) Use a minimum size of 8 gauge wire for upgrades, make sure all grounding points are clean bare metal for best possible connection. If these do not work well enough you will have no choice but to upgrade your alternator to one of a greater current output. [/QUOTE]

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