I bought a new battery (red top) cause my stock was struggling with my sound system. However it doesn't fit in the stock battery holder. I'm gonna relocate it to the back. I made a tray and a box big enough for the battery and carpeted it to match the sub box and interior carpet. Can I use my 4 gauge subwoofer wiring to connect the new battery to the positive connectors that went to the old battery? Can i just ground the old negative wiring and then ground the new battery to the frame? I dont really want to buy the 60 dollar wiring kit. lol. I have a 99 dollar amp kit with 4 gauge wiring that I hope will work. Thanks!