How To Find A Ground Wire In Car. Many time we choose based on price but is there a real difference. The simplest way to check for a bad ground is to run a continuity test between the battery and the chassis.
The ground is a major part of the batterys charging system so assuming that youre getting proper voltage output from the alternator wire and the battery isnt hashed then you may be looking at a bad ground wire. With a little practice the average weekend mechanic can learn to locate trouble in a wire with minimal testing. Wire on the bottom right is the ground coming in from the dashboard area and the one on the bottom left is the heavier gauge ground wire connecting the terminal strip to the frame.
Wire on the bottom right is the ground coming in from the dashboard area and the one on the bottom left is the heavier gauge ground wire connecting the terminal strip to the frame.
Always do a visual inspection of the wiring of the device that is not performing. You should get something in the neighborhood of 126 volts. The first method is a common ground that connects several grounds to one wire that then goes to a good location on the frame or to the engine. The second method is to have a wire from the negative side of the part go to a switched grounding device like the on-board computer or ECM.
