@DarkScorpionIf i install this and experience voltage drops then should i do the big 3?
And do you know where i could buy a voltage meter? Not a standard voltage meter? but the kind used in car audio?
Does anyone know where i can buy like 10ft of 0gauge? and ring terminals for them?
for the big 3
Everywhere ive seen they want like $3 per foot ..
Whats decent pricing per foot?
Yup, I usually tell people to start off with the big 3. If that doens't work, upgrade the front battery. If that doesn't work, add a second battery to the back. Then on to a HO alternator and so on and so forth. But I doubt you'd need to go past the big 3 and possibly a better battery in the front.
Most 1/0 wire that is marketed towards Audio sells for $3.00 - $3.50 a foot. Why? Profit. Welding cable, on the other hand, is the EXACT same thing, just less flexible, while being only $2.00 - $2.50 per foot. Some people will tell you it's as stiff as a rod, but just like any other brand out there, "audio brand" or not, it varies from company to company. Check this out:
Welding Supply; click on "Cable Welding," then scroll down to the 1/0 wiring. This stuff is CHEAP, is guaranteed to meet AWG standards (so you are definitely, 100% receiving true 1/0ga wire), and is still fairly flexible - definitely flexible enough for the big 3, for a run from your battery in the front to the amp in the back, and for grounding your amp. You get a discount when you buy 25+ and 50+ ft. of cable, so if you wanted to pick up some for the big 3 as well as for later in case you wanted to upgrade, now would be a good time to stock up just in case. But it's still cheaper either way (usually, 10-13ft. is sufficient to do the big 3). You can also buy cable lugs from them; cable lugs are usually sufficient for the big 3 since you don't have any pre-sized terminals or anything to worry about.
These wiring kits are very popular as well, but too pricey if you're using the wire just for the Big 3.
Also, check out
Darvex for all your connectors, volt meters, and installation accessories in general. They are a very popular and reputable site, especially here on the forums, so don't fret purchasing from them.