Mostly you will see it bolted to the engine.
From the battery to frame directly under the battery box. From the frame to the engine at the motor mounts with a short ground cable. Usually on the drivers side.
the best option is to ground it directly to the frame of the car. but anywhere metal generally works... to get the best connection you should grind the metal so its shiney then put the bolt or screw through the wire (usually a fitting on the end of the wire) and through the car... (do not drill through your car frame use existing holes)
The ground wire leads from the negative side of the battery and connects either to the engine block or to the frame of the automobile.
You can test the fuel pump by touching the positive wire on the positive post of the battery. You will need to ground the ground wire.
positive goes to the battery and negitive goes to a ground clamp on the frame..
anywhere on the frame or body that is cleaned of paint and rust.
Might be bad ignition switch?? Check the ground wire as well. Check and clean if corroded: The Ground strap/wire from the frame to the engine The small ground wire from the battery to the body The Ground wire from the battery to the engine.
you need to attach a wire to the steel frame of the turn table, maybe a screw that's into metal not plastic on the frame of body of the turntable. then connect the wire to the ground terminal on your amp, the terminal should be marked.
Check the ground wire to the battery, nad frame.
The battery ground wire runs from the battery to the engine block.
Generally near the battery. The factory topically anchor the wires within reach of the body ground wire because it all goes in at once.
Use a jumper wire from the battery + (pos) terminal to the positive on the blower motor, and run a - (Ground) wire from ground on the motor, to chassis or frame.