I don't understand the level of some people's hackery. In the following picture you see where some prior person's attempt at a repair. Seems someone threw in a new wiring harness in this car. But rather than be professional about it and replace the crappy old wiring in it's entirety they just spliced in to the original stuff as convenient. In this picture you see a dash light, where they used a Sta-Kon (hack one) to tie into the old wiring that has it's cloth covered insulation literally falling off and has been missing for so long the wiring is oxidized. They make replacement contacts with a pigtail to fix this exact issue, all else failing you could have slipped some heat shrink over the old wiring to at least keep it from shorting out.