OK Mr Dunderhead here. On my 64 there is a rigged looking hotwire going from the hot side of the battery to what I believe is my horn relay (which has a wire going to the horn). A large & small wire run from there thru the firewall, another small wire goes to the square metal box below it with 4 prong connectors on it (i believe some one stated there ar no stupid questions). Why the hotwire & what is the larger metal box?