where does this wire go to the most important earth wire is the engine earth if it isn't connected all other neutrals will draw too much current and melt insulation
Negative is usually earth. Just connect earth wires to the frame/engine. You can also improve the earth connection by running a wire from the battery negative to the frame/engine.
Old brit cars (some) had a positive earth, just covering all bases! A good earth is vital, often an additional earth can help stabilize an erratic idle or higher speed misfires. As well as protect from ignition circuit failures as can occur with bad earths.
haha yeah....theres a big difference between old britt cars and minibikes....
earthing is vital but its not that hard to put a green and yellow wire with a ring terminal underneath a bolt head, a 2 second job.
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