Lately I have had the outside temp sensor go wonky. It registers -37F all the time. I changed it out and the new one did the same thing. Also when I honked the horn it made the display go to -37F as well. Found the grounds and they were both in the same location in front of the left front wheelwell in the engine bay. Cleaned the wires-did not work. Removed the grounding strap, cut it off, stripped the leftover wires, twisted them, soldered them and reattached it but to no avail. Still getting the -37F temp display in the car and it also does this when I honk the horn. Anyone ever had this issue or have any further input into this? Maybe there are some crossed wires somewhere else someone knows of? Would really like to get this annoyance taken care of soon as I am tired of getting the gong for the temp every time I hit the horn or even when I am just driving along somewhere!