02-01-2025, 03:47 PM
If possible, earth returns on everything.
Remember, the earth may be carrying the same current as the feed, so it needs to be the appropriat spec.
I look at the current capacity quoted by the suppliers, and add some.
Eg: 35 watt headlamp bulb on 6 volts need at least : 35 divided by 6: call it 6 amps.
If there is a cable that will fit, rated at 10, I would use that at the very least.
For the feeder from the battery to the ignition switch - add up all the possible amps, and make sure that cable is rated properly.
If going from 12 to 6, the current capability of your starter cable needs to be checked and upgraded if necessary - doubled, if the previous owner installed it "down to the specification".
Remember, the earth may be carrying the same current as the feed, so it needs to be the appropriat spec.
I look at the current capacity quoted by the suppliers, and add some.
Eg: 35 watt headlamp bulb on 6 volts need at least : 35 divided by 6: call it 6 amps.
If there is a cable that will fit, rated at 10, I would use that at the very least.
For the feeder from the battery to the ignition switch - add up all the possible amps, and make sure that cable is rated properly.
If going from 12 to 6, the current capability of your starter cable needs to be checked and upgraded if necessary - doubled, if the previous owner installed it "down to the specification".