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<blockquote data-quote="cversion7" data-source="post: 1202816" data-attributes="member: 563809">I just did the big three this weekend and it helped tremendously. I currently have a 460 watt Kenwood amp on 8 guage power/ground pushing two RF P2 12&quot;s. My headlights and interior lights have been dimming horribly at stop lights and quite a bit even on the freeway. I decided to take a look at the wiring and throw in some 4ga for the big three. Battery pos to fuse block, Battery neg, and alt to battery pos. I just added to the existing wiring and now no dimming unless the engine is below 1000 rpms. Two things though: 1. I have a 2003 Olds Alero and you didn&#039;t mention your car make, 2. My alt wire is like 12ga (or less). I couldn&#039;t believe how small it was and thought I was missing something. Yours may not be this way. What I&#039;m getting at is this: you might not experience the exact same result, but it will surely help out a lot with the dimming problem.I&#039;m going to be upgrading the amp soon and will move up to 4ga when I do on the power and ground. I would suggest the same if you are pushing any power over 400 watts.Cedit: stock battery (500-550 CCA) and stock alternator (90-95 amps)</blockquote>

[QUOTE="cversion7, post: 1202816, member: 563809"] I just did the big three this weekend and it helped tremendously. I currently have a 460 watt Kenwood amp on 8 guage power/ground pushing two RF P2 12"s. My headlights and interior lights have been dimming horribly at stop lights and quite a bit even on the freeway. I decided to take a look at the wiring and throw in some 4ga for the big three. Battery pos to fuse block, Battery neg, and alt to battery pos. I just added to the existing wiring and now no dimming unless the engine is below 1000 rpms. Two things though: 1. I have a 2003 Olds Alero and you didn't mention your car make, 2. My alt wire is like 12ga (or less). I couldn't believe how small it was and thought I was missing something. Yours may not be this way. What I'm getting at is this: you might not experience the exact same result, but it will surely help out a lot with the dimming problem. I'm going to be upgrading the amp soon and will move up to 4ga when I do on the power and ground. I would suggest the same if you are pushing any power over 400 watts. C edit: stock battery (500-550 CCA) and stock alternator (90-95 amps) [/QUOTE]

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