MIL Went Out!

Last week bought '02 GT with recently installed Bassani X pipes and AFT CATS. No MIL eliminators had been installed. The MIL was on from the time I bought the car and I ordered a pr of MIL eliminators. Car had 3200 miles on it when I bought it and I've put about 500 miles on it since. Drove car this morning (MIL eliminators have not yet arrived) and MIL was not on. Tried restarting several times and MIL didn't come on. Any ideas about what's up?

Any thought? Did I say something that offended or was the question stupid or ?????????

Gosh I hate to display such ignorance but I'm new at this so here goes. I'm not sure if it has cats! I can read Bassani on the exhaust system, there are very small round "mufflers" before the X and large muffler-looking "boxes" after the X ... are those the cats? If so, are MIL eliminators typically only necessary if the system does NOT have cats? I was told the exhaust system on my car required MIL eliminators simply because it was an after-market "off-road" system ...

Regarding burn-out from getting wet, I read they shouldn't burn out from the connectors getting wet but still the connections should be protected from getting wet "just to be safe".