I have a 1972, manufacturing date was June 72. This vehicle has the 350 conversion and I am running a 150 amp alternator straight to the battery the battery goes straight to the solenoid on the starter and I've got a fuse box with all my switches off the battery using fuses and relays a breaker etc.… This is my auxiliary fuse block and switches. So the concern I have is I've noticed that there's really nothing that batteries connecting to that's giving the actual vehicle electrical I mean I'm looking at this thing and with one little tiny wire that was hanging down, then I installed it yet it's probably a 12 gauge wire and once I put it to positive everything on this vehicle will work :headlights brake lights, ignition, you name it Everything seems to work now let's say everything is running everything is doing great and I pulled 12 ga wire off power (hot)...everything dies ---- no horn. Wipers doesn't work ...lights doesn't work ignition doesn't work nothing. Literallly one tiny wire powers the entire vehicle doesn't make sense. Why does this seem odd?