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Black wiring harness with relay box and 9007 connectors

XtremeVision

XtremeVision 9007-HARNESS-4-XT 35W Bi-Xenon Relay Harness

SKU CH-10M5-JARHT MPN 9007-HARNESS-4-XT

Plug-and-play relay harness enables high/low switching for 35 W 9007 bi-xenon HID kits on 12 V systems

  • Height1.0 in
  • Plug-and-play design eliminates extra battery wiring
  • Relay harness provides reliable high/low beam switching
  • Built for 35W HID kits only, not 55W
  • Compatible with dual-beam HID bulbs for bi-xenon function
  • 12V operation matches standard vehicle electrical systems

Bi-Xenon Relay Harness for 35W Kits

The XtremeVision 9007-HARNESS-4-XT is a plug-and-play wiring controller built for dual-beam HID conversion kits rated at 35W. It handles high and low beam switching through an integrated relay so the factory headlight circuit is not overloaded. This harness is intended for owners upgrading halogen headlights to HID on vehicles that use a 9007 bulb base.

Plug-and-Play Design with Direct Fit

Installation requires no extra wiring to the battery because the harness draws power through the existing headlight connectors. The unit measures 14 inches in overall length and 1.0 inch in height, weighing 3.2 ounces, so it fits behind most headlight housings without modification. A 12-volt supply is used and the relay manages the bi-xenon bulb's internal shutter for reliable beam changes.

Upgrade Path from Standard Halogen Wiring

This harness replaces the factory halogen plug when a 35W HID kit is installed, preventing flicker and voltage drop that can damage ballasts. It is not compatible with 55W HID kits, so buyers planning higher-wattage systems must source a different harness. The jump is worth it when moving to 35W bi-xenon HID for consistent output and proper high/low function.

Highlights

  • Plug-and-play design eliminates extra battery wiring
  • Relay harness provides reliable high/low beam switching
  • Built for 35W HID kits only, not 55W
  • Compatible with dual-beam HID bulbs for bi-xenon function
  • 12V operation matches standard vehicle electrical systems

Specifications

BrandXtremeVision
Model9007-HARNESS-4-XT
Height1.0 in

Questions about this item

Does the 12-volt 35W harness support 55W HID kits?

The harness is compatible only with 35W HID conversion kits and is not compatible with 55W kits.

What clearance does the 14 x 1 x 1 inch harness need behind the headlight housing?

The harness measures 14 inches long, 1 inch wide and 1 inch high, so allow at least that space behind the housing.

How do I connect the harness for high/low beam switching without running wires to the battery?

Plug the harness into the factory 9007 socket and the HID ballasts; it draws power through the original wiring, so no battery lead is required.

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