Repop steering column electrical connector.

Tell us which wire melted down in that connector. We can try to determine why and what to do to prevent it happening again. A new ignition switch will include a new male side connector but... Aftermarket replacements often have a extra small black wire in a wrong position. I've found simple solution is cut the orange wire out of both connectors and make it up beside with male and female spade terminals. Leave that extra wire to dead end where it is.