need to find out where negative cables run to from the battery ?

What year, make, model & engine? Typically the negative cable runs from the battery to the engine block.

Thanks for your reply, but I actually need more info.

There are 3 negative wires--one main wire to the block, I am not sure where the other two wires go?

The vehicle is a '98 GMC Jimmy 4x4 with a 4.3l engine.

One of the smaller ones goes to body ground: On the radiator support between the battery and the right headlight housing, it's bolted on. The second smaller one goes to the frame below the battery, it also bolts on.