More current draw (higher amperage) requires a larger wire gauge to safely power the accessory. Automotive Voltage is not 12 Volts Automotive wiring is not exactly 12 volt. The actual resting voltage of a fully charged, 6-cell automotive lead acid battery is about 12.7 volts or about 2.1 ...
Combination tool or wire stripper Wire connectors (wire nuts) Step 1 Disassemble the lamp and remove the old wires:Unplug the lamp and remove the lampshade. Remove the cap on the wire connection housing—usually, this is a simple pop-off cap. Then, pop the outer shells off the bulb socket...
Referring again to the water analogy, wire gauge would be the inside diameter of the pipe. If you have a certain volume of water that you need to move through the pipe in a minute and cannot change the water pressure, then using a wider pipe will ensure the job will get done. Similarl...
If you’re adding a new relay system, consult an automotive amperage chart to determine the gauge of wires needed, and make sure the relay can handle the amount of power needed for your new device or accessory. 2 Connect the car battery’s positive terminal to the relay's 30 terminal. ...