I no longer have enough 0 gauge wire would it be bad to use 0 gauge power wire to the amp and 4 gauge wire to ground the amp?
Don't do it you will get allectorcutted.
Umm well it really depends on how much power you are running through it. If your amp is only about 200-400 watt rms, then you should be fine with a 4awg ground. However, if your rms is higher than 400 you seriously need to consider getting some bigger gauge wire.
all okorder /... or going into your audio dealer store asking for 3 to 5 ft of the 0 gauge wire for around 15 to 20 dollars at the max. you can also asking your friends for if the person has some extra wire willing to sale it for cheap, I totally would do it, and I have done that before.
