Headlight Relay Installation The harness includes two high-quality Matsushita automotive grade 20-amp plug-in relays, each protected by a heavy plastic water resistant cover. It’s pre-wired with H4 ...

A heavily modified 1972 Porsche 911T Coupe with a twin-plug 2.5L engine and Kremer-inspired styling is now up for auction.

Offered by Reenmachine, the package consists of a pair of Hella high-performance halogen H4 headlights and a modern high-output, relay-driven wiring harness.

Check out these high-performance, aftermarket headlights for your 4x4 truck or Jeep that use IPF Halogen bulbs that radically enhance the light output of your headlamps. Details inside Four ...

How to adjust Mini Cooper headlights? Current-generation Minis use H4 Halogen in their low beam lights, and you need to ensure you have the ignition switched off and to never, ever touch the globes ...