No brake lights

i tore the gauge cluster out. turned out i had only 6 volts to the brake light switch. i traced the wire and turned out it had been spliced 4 times. with 4 different wires. i put one new wire in and i had 12 volts temporarily. i traced it to the fuse block and the wire split off to 4 other wires. those wires went to various other things. i traced the oe that went to the fuse block and on top the fuse block was rusty. i took a screwdriver and scraped alittle of the corrosion off and they started working. i sleanded everything up the best i could and so far they work for now. i then went to plug in the nasty corroded headlight switch back in and now the headlights dont work. i got a new switch and will put it on tomorrow. i plan on getting an entire new harness but right now im broke and in college. and i have to drive this p.o.s everyday. i just hope it dont burn to the ground before i get it all fixed. lol