Short answer: an H13 (also called 9008) bi-xenon HID bulb has a single capsule that moves to switch between low and high beam. The H13/9008 Bi-Xenon Hi/Lo Wiring Controller is the harness that makes that switching work properly. One harness runs both headlights, and it works with 35W and 55W HID kits.
When you need it
- You're running a dual-beam (hi/lo) H13 or 9008 HID kit
- The high beam doesn't switch, or it switches unreliably
- You want a cleaner, heavy-duty harness than what came with a budget kit
If your car uses single-beam bulbs like H11 or 9006, this isn't the part. Those don't switch inside the bulb.
What it is
- A dual-beam hi/lo controller harness for H13 and 9008 bi-xenon HID kits
- Heavy-duty construction
- Rated for 35W and 55W HID kits
- Connects to both the left and right headlights from one harness
- Part number H13-DCBI-RLY
Install tips
- Follow the wiring diagram that came with your HID kit, and use this harness between the factory H13 plug, the ballasts and the bulbs.
- Route it away from the exhaust and any moving parts, and secure it every few inches.
- Test low beam, high beam and flash-to-pass before you close everything up.
More harnesses and adapters are in Wiring Harnesses & Adapters. Need the whole setup? See HID Conversion Kits.
FAQ
Is H13 the same as 9008?
Yes. H13 and 9008 are two names for the same dual-filament headlight base. That's why this controller is listed for both. Check your owner's manual or the old bulb to confirm.
Will it work with a 55W HID kit?
Yes. The listing rates this controller for both 35W and 55W HID kits, so you can use it with either one. Just match the bulbs and ballasts to each other.
Do I need one controller per headlight?
No. One harness connects to both the left and right headlights. For a normal setup with two headlights, you only need one controller, along with your HID kit's ballasts and bulbs.
Why won't my high beam switch?
On a bi-xenon H13 bulb, a small solenoid moves the capsule. If it isn't getting the right signal, the beam won't change. A proper hi/lo controller is usually the fix.
Questions before you order? Call us at 702-988-6800, Mon–Fri 8am–3pm PT. GENSSI has been in business since 2013. Shipping is free to the lower 48, and returns are accepted within 30 days with an RMA.
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