Types of Lamps
Before looking at the PIAA lamps, we should clarify what different types of lamps do, the three main types are;

Fog Lamps - Fog lamps should be mounted as low as possible to prevent the light bouncing back and allow you to see "under" the fog. They are designed specifically for inclement weather conditions, and are of little for regular highway driving in normal conditions. However, when mounted high on a vehicle, they can make a good off road light source, as they illuminate the area close to the vehicle very well.

Driving Lamps - Driving lamps make a good all round lamp for both on road and off road use. They illuminate reasonably well into the distance and also provide a good spread. If only one set of lamps will be installed, and fog lamps are not required in your area, then driving lamps are the obvious choice.

Spot Lamps - Spot lamps are ideal for highway driving as they move your focus far ahead of the vehicle. They can be useful on the trail when looking far ahead, but their primary use is for freeway driving.

Which lamps for the H2?
PIAA make an excellent range of aux lamps, many suited for the H2, in particular the 520, 525, 540, 550, and 580 series. I chose the 580's as they produce a lot of light and suit the H2 well, although many people have opted for 520's and are very happy with them.

The 580 series lamps use the PIAA Xtreme White 85w bulbs, which I also have in the stock roof mounted lights, and I've been very impressed these bulbs. Unlike, many of the "fake" HID look bulbs, which seem to produce a higher color temperature, but with lower light output, these bulbs definitely produce more light and at a good color temp, they match the Xenarc HID's perfectly.

I opted for two driving lamps on the outside of the Warn light bar, and two spot lamps on the inside. This provides an excellent view down the road or trail with good mid range side illumination also.

On the Gobi rack there are two more driving lights on the inside and two fog lights on the outside. This provides an excellent source of close to mid range illumination and is very useful when off road.

In terms of wiring, PIAA provide an excellent wiring kit with their lamps. Always try and wire the + feed to the battery, and mount relays out of the way where they will not get wet or damaged. Under the fake air boxes is a good choice, as is the outside of the fuse box in the engine compartment, or even in the cab along the rail at the bottom of the dash.

Going though the bulk head is the hardest thing and I opted to pierce the large rubber grommet that the main wire harness goes through (this is kind of above where your left foot goes). Then I ran a wire through the hole, which comes out down below the engine compartment fuse box. Everything was sealed up with black marine silicone once complete. If you anticipate ever adding more lights, it is a good idea to run the wires through the bulkhead now, so they are ready when you need them.

The PIAA switches do not fit in with the stock appearance of the vehicle. Radio Shack sell a 12v switch that is very similar to the stock one, but without an "on" LED, although they do offer a switch slightly large than the stock one that does have an "on" LED. I have three lamp switches on the overhead console, the blank below the rear wiper controls can also be used, but I have a switch for the winch solenoid there already.

Taking + feed for the switch from the SEO ACCY fuse circuit, which is not used for anything else, allows the lamps to be ignition switched, unlike the stock ones that can be left on when the ignition is off.

Aesthetically, the 580's look great and their size and general appearance fits well with the overall H2 image. They are very effective at lighting the road or trail and their larger bulb size shows.

Overall, I'm very impressed with the 580's and would 100% recommend them to anyone looking for some well made aux lights that do the job well.

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