Def-HWUK Defender Headlight Wiring Upgrade Kit

Price $150.00


Why do a Defender Headlight Wiring Upgrade

Like most Defenders, does yours need brighter headlights? So what to do first, fit more powerful globes or fit thicker headlight wiring and new relays?

You may think the quickest option to gaining brighter headlights is to fit more powerful globes BUT if your original headlights are not all that bright in the first place then the problem is most likely caused by the undersized existing headlight wiring and fitting more powerful globe will probably not only NOT make your headlights brighter but if your vehicle does not have headlight relays, the higher power required by these new globes will usually mean your Defender headlight switch will burn out and need replacing before to long.

Because the wiring in Defenders, old and new, do not have Headlight Relays, you really need to upgrade the wiring and install Headlight Relays BEFORE you fit higher wattage globes and in most cases, the installation of a our Headlight Wiring Upgrade Kit will make such a big difference to the brightness of existing headlights, this may be all you need to do.

You don’t need any auto electrical experience to fit any of our Headlight Wiring Upgrade Kits, you don’t even need a multi meter, just some basic tool and a few spare hours.

The kits are supplied with two pre-wired headlight globe sockets and our own specially manufactured plug that is used to connect your existing headlight wiring to the new loom. There is no need to cut or alter the vehicle’s existing wiring in any way and to make sure you get the maximum advantage by upgrading your headlight wiring with one of our kits, we use the same size ( or thicker ) cable for our headlight wires as most other brands of upgrade looms use for their driving light wire and our driving light cable is even thicker again, so you WILL get much brighter lights.

The Kit’s wiring is colour coded and the comprehensive instructions take you through the whole installation procedure, step by step, based on the coloured wire code, to make for a simple to follow installation and everything you need for a full professional job is provided in the kits including all the crimp terminals, split tube, wire ties, mounting hardware, even a roll of electrical tape.

Also, as our Headlight Wiring Upgrade Kits include the installation of new relays, this gives you another major benefit in that the current load will be removed from your Defender Headlight Switch, your headlight switch will then probably never need replacing again and the money you save will in most cases be much more than the cost of our Headlight Wiring Upgrade Kit so the Kit actually pays for itself.


We have two Defender headlight wiring kits, the Headlight Wiring Upgrade Kit and the Def-Combo Headlight and Driving Light Wiring Upgrade Kit.

The Headlight Wiring Upgrade Kit has everything in it to upgrade the wiring for two standard Defender H4 type headlights and the Combo Headlight and Driving Light Wiring Upgrade Kit is supplied with extra wiring and hardware to wire up two driving lights as well as the two headlights.


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