OK, after careful consideration, It seems the best way to upgrade the electrical system in my 66 FJ40 is to start from scratch and build a new wiring harness, My questions are - how large should the wire be to carry the juice from a high output alternator say 100 amp or more? How do I go about figuring how much amperage I need? ie. winch, lights, dual amp stereo system. Where can I buy HIGH quality wire, terminals, fuseblocks etc.? Should all terminals be soldered or are the good crimp connectors adequate? Will I need to re-use my stock terminals? Thanks !