the main negetive battery lead should run straight to the engine block
No. That would short out and potentially cause a fire. The negative side will go to the frame or the body to ground.
Depends on the vehicle, but normally it bolts to the engine. The negative is the ground cable.
No. That would short out and potentially cause a fire. The negative side will go to the frame or the body to ground.
Positive to positive, negative to negative if you are asking about installing one battery in a vehicle.
The battery cable that is grounded, is connected to the body of the vehicle. Sometimes it is the negative cable & sometimes it is the positive. You need to check which cable is connected to the body of the vehicle.
In most batteries, the negative terminal is made out of zinc and the positive terminal is made out of carbon. this may vary depending upon the type of battery and the amount of power it supplies.
Dead short in the battery. Battery can explode and damage can be done to the electronics in the vehicle.
In a negative ground system, hook the vehicle ground (frame) to the negative of the first battery, positive of that battery to negative of second battery and the positive of the second battery back to vehicle positive. ( starter or starter solenoid) If you are hooking 2 12 volt batteries in series you will have 24 volts.
Negative.
Something on the vehicle is on pulling power.
First off you must have the same type batteries. Connect the positive post of the first battery to the positive post of the second battery. Then connect the negative post of the first battery to the negative post of the second battery. Now connect the positive post of the first battery to the positive connection on the vehicle. Then connect the negative post of the first battery to the negative cable of the vehicle. Click the link for a diagram.
Take the # 1 battery and connect the positive cable to the vehicle. Then connect the negative cable on # 1 battery to the positive post on battery # 2. Finally connect the negative post on battery # 2 to ground on the vehicle. You will have 12 volts but only the amperage of #1 battery.