Thread: Advice Needed: Volt difference
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Old 04-13-2016, 12:42 AM   Thread Starter #6
CammusThread Starter
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Default Re: Volt difference

Originally Posted by Avguytx View Post
It's Ohms law. If you are working with the stock alternator and a huge amp, you're going to get a voltage drop pulling a lot of current. You say you have 0 gauge power...same for ground? Are you grounded straight to the frame for the amplifier? Are you running two batteries or one? Did you upgrade the charging cable that goes from the alternator to the battery? Did you upgrade the ground wire from the battery to the frame or at least check connections? Just because you have a "Yellow Top Optima" doesn't mean it's going to sit at 13.2v at any given point. Voltage will drop and lights will dim when you add a large amp onto a stock alternator. There's about enough there to drive the accessories on the car and not much more.
0 gauge cable for ground and battery.
Yes, grounded to the frame in the trunk (under the carpet)
One battery
Nope, I haven't done the Big 3 upgrade yet (because I wanted to know if its real that the car could get into flames if something goes wrong?) I have the wires, just need the fuse.
The lights doesn't dim neither inside the cabin.

Question: did you saw my video? The battery voltmeter does not go as low as the one in the amp. It stays between 13.4-13.8
The one to the amp goes from 13.4 to 10.9 even at low volume.
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