Adapter: H4 Male > H1 Female Infiniti PWM Integration: PWM stands for

PWM Integration: PWM stands for Pulse Width Modulation

generic LED's that everybody else is pushing

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Adapter: H4 Male > H1 Female Infiniti PWM Integration: PWM stands forUseful: Sometimes "this" just doesn't plug into "that" When the industry standard for aftermarket lighting calls for mostly 9006 Female inputs, these adapters will come in handy. Go Direct: If your vehicle's stock headlight circuit is strong enough to power ballasts without a relay harness, these are the perfect solution for non 9006 headlight systems since almost all HID ballasts require a 9006 female input. Standard: These are standard equipment on