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H4 wiring harness

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  • H4 wiring harness

    After I retrofited my headlight with koito bi-led, I decided to retrofit it again with hella g5r projector.
    So I have a doubt about h4 wiring harness if I could use wiring in the first photo (put the plug in to original h4 and the other connect to ballast) instread of h4 wiring harness in the second photo

    if I use wiring in first photo, does it has any effect for long term?

  • #2
    Unfortunately for H4 you will need to use the relay (pic2). If you go with just pic 1 wiring and connect solenoid with high beam output of H4 socket, when you switch on high beam, your hid ballast will lose power and bulb will stop glowing