Circuit Performance ceramic heavy duty headlight wiring harnesses install in seconds to protect your factory wiring from costly damage from high-wattage aftermarket bulbs. Don’t settle for other “high-temp” plastic connectors, Circuit Performance harnesses are constructed of a unique ceramic material that is built to last.
High-Performance bulbs are a great way to improve light output, but they create additional heat that can damage your stock wiring. Don’t risk it!
Plug & Play installation means no modification is necessary to your vehicle – installation takes only seconds. Bulbs not included.

EZ Plug-n-Play
Super easy plug-n-play installation means no modification to the vehicle is required. Simply plug inline between your bulb and OE harness, similar to an extension cord.

30 Second installation
The harness can literally install in seconds. Plug it in and protect your stock wiring from the additional heat associated with high-wattage aftermarket headlight and foglight bulbs.

Heavy Duty 16GA Wire
Heavy duty 16GA wire is used to decrease resistance thus decreasing the heat from higher wattage aftermarket bulbs. Simply put, thicker wire = more electrons = better light output.
Online fast and easy and I got my shipment quickly thank you
Product was ordered and shipped in a timely manner. Problem with USPS service, border crossing and Canada Post. 8 days after the product was shipped I still have not received it. It took 5 days to reach the final USPS sorting location before it crossed the border.
Both government mail services perform poorly.
The harness plugged in perfectly to my Jeep’s replacement halogen headlights (Hella H4) and will solve the issue of melting sockets.
The delivery was quick considering it was shipped internationally to Canada.
A great shopping experience.
Got the pigtail for the Mini in good order and had it put in my Cooper S today – seems the original plug connected to the headlight bulb is plastic and is subject to melting when the temperatures get too high – it’s a light bulb in an enclosed space, of course it’s going to get hot – the plug you supply is a ceramic connector which will solve the melting problem on the H13 bulbs – I suspect you can figure on more of these going bad as the newer bulbs with greater temperatures are used in Mini Coopers.
a good product, but the light doesn’t have anything to do with most expected HID result, the result is a strange combination of purple and pink, most pink in the daylight and truly purple when the night comes… so if you look for a “blue” result, don’t buy these ones.