Hi,
I'm going on a road trip this afternoon (7 hours, all highway) in temperatures that will be in excess of 95 degrees the whole way. My cherokee doesn't have a temp gauge on it, only a dummy light, and I have reason to believe that it doesn't work (none of the other lights, 4x4 indicator, or check engine light function). Also, it didn't come on when the fluid was boiling over due to a snapped belt a few months ago. Those problems are all fixed, but...

TLDR: What are some symptoms of overheating I should watch for on this trip?

Thanks, -Sean