With the negative car battery terminal connected to the frame, ... They come in different colors: red for the “hot” 12-volt positive terminal, and black for the negative “ground” terminal.

In order for the dual-battery system to operate properly, you need a crossover cable between the negative terminals of the two batteries. Also, connect the negative cable lug from the engine/ground ...

But it will NOT attach to the negative battery terminal—this can cause a potential fire. Instead, place the remaining black clamp on a bare metal part of the dead battery car, like a bolt. Step ...

Step 2: Locate the battery terminals. Make sure you know what your positive (+) and negative (-) battery terminals are, as the jumper cables will have to attach to them.

DEAR CAR TALK: I have a 1979 Mercedes-Benz 240D that sat for about a year because the injection pump began to leak. I eventually was able to find an inexpensive injection pump and install it. I ...