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Message: [QUOTE="jdc753, post: 531473, member: 52"] Maybe I am wrong but I thought 11.8-12.3 would be perfectly normal for an idle system, where as when the alternator is charging it will be putting out in the 14-18v range. Remember this is a 12v system, so when idle it should be close to that but to recharge the batteries it will kick up sum till the storage capacity is reached. I don't have HID's or an aftermarket pump but a fairly large stereo 1500w sub amp and 400w speaker amp and I never have an issue with voltage drop. I would certainly look into the grounds, and you can check the voltage at the alternator yourself with a DMM, but the amperage is more what you want to know. [/QUOTE]

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