RAD4Runner

+1

Harness is more essential because of poor headlight circuit wiring. See Voltage Drop Comparisons: with Sealed Beam & Engine off

Stock Wiring After Retrofit:

Brendan

OK, I will definitely look into the wiring harness. In the meantime however, the part I ordered (003427291) came in, but was only a single light rather than a pair. The parts guy was unsure if it was a single or pair at the time it was ordered, but considering it was $105, I figured it must be a pair. Nope. Anyways, they had a different part number (003427811) that was already on the shelf boxed as a pair that he was able to adjust so that it was the same price as the other single unit so that's what I ended up bringing home, but now looking at hella's website, the only difference that I can see is that this pair that I now have is not DOT approved while the other one is. There must be some reason for this...?

http://www.myhellalights.com/index.p...sion-headlamp/

RSR

FWIW, I got both of mine off ebay for less than the price of your 1.

This seller: http://www.ebay.com/itm/Hella-003427...-/131030189773

Brendan

fewer options/expensive shipping being in Canada

as for the wiring harness, I'm not having much luck finding any reasonably priced that I can access either for the above reason. Is there a list of parts that I could try to piece together myself?

Brendan

http://forums.corvetteforum.com/c4-g...onversion.html

I searched and found a bit of clarification from the corvette gang. Copy and paste below...

003427811
ECE (aka E-Spec)
European not US DOT approved
200mm (Will fit C4 Corvettes)
Better Lighting
Headlight Kit - Contains two cassings and 60/55w H4 bulbs

003427291
SAE
US DOT approved
200mm (Will fit C4 Corvettes)
Lighting not as good
Single Headlight - Uses 9003 Bulb but H4 will also fit

EDIT: more cut and paste differences

There are four basic differences between a Vision Plus (DOT Approved) and a Hella Euro Conversion.

First is in the lighting pattern. For us in the US the regulations date from the 50's. The US DOT mandates a dispersed pattern that puts a percentage of the light output UP and to both sides of the road so that overhead or roadside signs, which may not have other lighting or reflective characteristics, are lit for you.

The European standard allows all the light to go on the road - they have a law that any overhead or roadside sign has to have it's own, independent lighting or must be highly reflective. So not only is there more light on the road with your low-beams, the high-beams are more precise as well. There is also a triangle of light on the right side to light up roadside signs. Lamps sold in places where they drive on the left side of the road, like England and Japan, have that triangle on the left side.

The effect is that the Euro lights actually put more light on the road for you to drive with, and offend oncoming traffic MUCH LESS because of the sharp cutoff in the lighting pattern. And all of this with the same wattage lamps as in the US.

That's on low beam. Because of the low-beam requirements and the way that screws up the lens and reflector design, it's impossible to get a good high beam. Although the Vision Plus is substantially better than your typical off-the-shelf sealed beam, it's performance falls short of the Hella Euro Conversion.

The second difference is that DOT also required that the lamp have the three Aiming Lugs on the face of the lens. This requirement was dropped in the 2000 DOT Standard when visual aiming was approved. The Vision Plus lamps still have the Aiming Lugs, E-code lamps do not.

Third, the lamp must have DOT molded into the face to confirm that it meets DOT. E-code lamps have E1 molded into the lens.

Fourth, the lamp must not have more than 60 watts on high beam and 55 watts on low beam. The Vision Plus comes with a 60/55w H4/HB2 bulb in it in order to meet the DOT standard. The E-code lamps have no bulb because there are many variations in wattage and color available. It is not recommended to put a higher wattage bulb in a Vision Plus because the light pattern could dazzle oncoming traffic.

The lights I purchased have the triangles on the left side of the lens.

RSR

Find what you want, PM me the links, and I'll send them to you in Canada at cost, including shipping. Please just don't stiff me. I'll invoice you by paypal in USD, and you can pay the +~10% price increase in their currency conversions.

Probably won't be back on yotatech until the weekend however...

Gevo

Good thread. Im keeping track of all the headlight mods for my own soon.

Thanks for all the pics

Brendan

Thanks for the generous offer, but I found a pair of the 003427811 lights for $105 at a local store. I'm still not sure about the triangle design mentioned in post #25. Mine seem to be on the wrong side, but every other box I have opened (4 in total) has them on the left side so I'm a bit confused and an email sent to hella about a week ago has gone unanswered.

RSR

Came across this vid: