One terminal is positive and the other terminal is negative. The positive terminal is slightly larger.
Positive wire is red, at least on automobile batteries.
Red
Positive & Negitive
Type your answer here... To use two batteries as a single power source, you have to connect the positive to the negative and the remaining negative to ground. The remaining positive goes to the red positive cable. The batteries are now in a series circuit. If you use two 6 volt batteries the total voltage is 12 volts. If you use 2 12 volt batteries the total voltage is 24 volts. If you hook the batteries both negative to negative and positive to positive you have made a parallel circuit. Batteries in a parallel circuit cancel each other out. Two 6 volt batteries in parallel have a total voltage of 0 volts. klb
Assuming the truck has a 12 volt system, connect the batteries in parallel, that is positive to positive and negative to negative.
Positive & Negitive
The batteries need to be wired in a series configuration. Wire the negative of the first battery to the positive of the second battery, and the negative of the second to the positive to the third. If the batteries were placed in a straight line they will look like train cars, with all positive ends of the batteries pointing in the same direction. The batteries voltages are now added together for three 12 volt batteries making 36 volts.
They put a +(positive) and -(negative) on each side. The + matches with a - and vice versa.
Connect Positive on A to Negative in B then Positive from B to whatever Positive on A had been connected to.
The positive ( + ) side of the batteries faces down
Its abouts Batteries
All batteries regardless of the type (alkaline, lead acid, mercury, gel cell) have a polarity. AAAA, AAA, AA, B, C, D batteries the top tip is positive the bottom flat portion is negative.