IG1 No 2 Fuse Pop as soon as I replace

try to shorten this up for you all..
06 Tacoma Prerunner 2.7L 4Cyl. 97K Miles with no Modification...

Small battery when given to me... (t post broke mid drive and cause battery to shift and caught spark and started small fire "dad stacked cardboard under battery to try to fit post" is what caught fire (not knowing 2 months down the road, my running lamp cable burned and causing shorts to tail lights and tag lights) Edit** my dad thinks there is bad ground somewhere, maybe battery cable, since battery free moved mid drive??**

Reverse polarities months ago, which wouldn't let it start - blew a couple fuses and replaced fixed Alt Fuse (non Tow Truck) - Fixed

Cut through Burnt Plastic cables and retapped on running lamps and headlights, so tail lights working, just last week. - Was thinking this fixed everything but nope.


(past few weeks fan/heater would only work on high) - seems after I fixed short in cables, my heater stopped working on high, the AC button doesn't come off (just learned that my Headlights don't dim anymore too), so found out my IG1 NO. 2 Fuse was half burnt, I go an throw another one in, and it pops right away, don't have many fuses to play with. I am a self learner, just want to know where I should check next? I did pull the clutch relay and the fuse still popped.

Done because internets said to: I did change the damn resistor, cleaned out motor fan in heater... but need to go backwards to find out where the short might be? any ideas?

Edit* also my ABS and Parking light on the dash came on same time the heater fan stopped blowing on Friday. prolly important - Also Tire Pressure warning light has.... always.... been on? could it be there? i never had any problem with Dimming Lights nor bad heater/AC blower until i fixed shorts in running lamps?

Help please

 

caribe makaira thank you! - i am going to start with Door Locks to be honest... i guess my grandfather installed an alarm system and the fob hasnt been working so i tossed the fob. as soon as i send power through ignition my door makes a loud Motor noise... i wonder if something messed up in there.. if not im going back to the AC/Heater blower and unplugging and then doing fuses. I do appreciate the graph. been searching online for 2 days and not much help.