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The size of the wire should consider for total current (two bulb) or separtely ?

EFI Wiring Fundamentals

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What should be the size of the wire for two halogen headlight bulbs that needs 55 watts each? Each use 4Amp and total of 8Amp. Hopefully, they will be connected in parallel. So, from battery to split point 14AWG and the splitted wires to bulb will be 18AWG maybe used as my understanding. Is it correct?

Hello yes you are correct with the sizing,

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