Changing the Power Wire

[groovespacer]

I would like to upgrade the power wire to a 4awg wire. I was wondering how I can get to the alternator to access this wire? There seem to be allot of crap between me and that wire, do I have to remove the air filter box to get to it? I found the ground wires very easy to replace, but the power is giving me problems. I looked in the Extending your cables in the DIY but I would like to change the entire wire rather than just extending it.

[Stock Solara SEV6]

Are you going to upgrade your alternator? The reason I ask is that I am sure that Toyota sized the stock cable for the amp rating of the alternator. So if you are just using a stock alternator, I don't see what upgrading the gauge of the wire will accomplish?

[B_Master_Flash]

Are you going to upgrade your alternator? The reason I ask is that I am sure that Toyota sized the stock cable for the amp rating of the alternator. So if you are just using a stock alternator, I don't see what upgrading the gauge of the wire will accomplish?

It's for high draw stereo systems, and it will make a difference even w/ the stock alternator. I cant answer the question either though, I have a bunch of 4awg cable laying around and I've been meaning to do it. If I do figure it out I'll be sure to post it though.

[groovespacer]

Yes the hypothesis is that it will help your electrical system but there is still debate about it. The main reason I wanna do this is because my old battery died so I am thinking why not? I also go a new Optima Yellow Top. If anyone can help me with this it would be greatly appreciated.

[ZXLNT]

Just leave the factory wiring in place and add in a second wire. I used a dual post Optima red top. Factory wiring on the side posts and the aftermarket on the top posts...

[groovespacer]

Thanks ZX but my goal is to actually replace with a bigger gauge.