I ran across this on eBay and I'm passing along because it -looks- the same as the special delayed relayed that my car uses for the "Belts" and lights reminder.
I had a heck of a time finding that (had to hit a parts car with the option) because I still had mine, but the capacitor was shot. So at least I knew what it looked like....
As does mine, this is a separate unit just for the warning lights, I believe. The normal horn relay, which is also the key buzzer, is on the rad support in the Canadian cars.