Plugged in something, no clue what it goes to tho..
 

I just bought a 98' blazer. When inspecting under the hood, I found a blue plug, I found its mate up behind the battery. I plugged them in, but don't know what they actually do. Anyone know?

RE: Plugged in something, no clue what it goes to tho..
 

Not exactly.
However there are only a few possible things. Depends on where that wire goes to. Horn, air bags sensor, ABS sensor???