Adapter: H4 Male > H13 Female GMC Designed to conquer compatibility concerns

Designed to conquer compatibility concerns

lower profile for an easier installation

Legalize It: If you like green

The resistors get so hot they can melt some light plastic and short wires

Adapter: H4 Male > H13 Female GMC Designed to conquer compatibility concernsUseful: 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