ZEX-Z

iTrader: (4)

I was just wondering what the Ground to the engine block actually goes to. i know it grounds out on the engine blck but where does the source go. it is the group of wires by the starter, along witht the Right hand O2 sensor wire, the starter signal wire, the ground and the knock sensor wire. What exactlly does that ground do. What components does that ground control. 1995 Z28 Camaro T-56.