Wiring diagram for relocation of battery to trunk using Ford starter solenoid for safety disconnect of main starter cable. Note that 2/0 ga wire is same as 00 ga. It's about 3/8" (10 mm) wire diameter. Use welding cable. Battery box must be securely anchored with steel hardware. Strap system shown uses Kevlar belt and reflects my install. Do not just bolt a box to the trunk floor.