Ok well one thing you could try is take the fuse out and test each side of the fuse that way you divide the circuit into two and can at least tell which side is shorted. That would at least eliminate looking at a lot of unnecessary stuff. Just looking at the circuit that involves the transaxle indicator light leads me to believe that they could be a splice pack for all the greys that run to the HVAC controls, Hazard switch, Instrument cluster, and compartment light, and that may be where the problem is coming from I see what you are saying where any problem with the gray would affect them all. If that wire got hot enough to break the solder joint then maybe it burned the insulation away on a ground causing a short that way. No matter how much we speculate about it, the only way to figure it out for sure is to get in there and look at the wires for burn damage and see if it is grounding out. If those wires got hot enough it is possible that they melted insulation on a ground wire and made contact. How likely that is I don't know but I saw the massive amount of wires in your dash and figure that it is possible. Any more info you can give on it?
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