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Headlight Conversion kit??

2K views 15 replies 8 participants last post by  Locruid 
#1 ·
#9 ·
I took engine off readings 3x:
Low: 11.17v
High: 10.51v
Low: 11.08v
High: 10.61v
Low: 11.16v
High: 10.60v

Did the mod and took another set of readings:
Low: 11.76v
High: 11.68v
Low: 11.79v
High: 11.71v
Low: 11.74v
High: 11.74v (fluke? lol)

The High beams are a HUGE difference. The Low beams are definitely noticeable though.
 
#10 ·
I wonder if those voltages would increase if

1) you placed the relays on the same side as the battery (less distance from battery)

and

2)if you used larger gauge wire (like 10 gauge so the voltage travels easier)?

and if so, would it be enough difference to notice?
 
#11 · (Edited)
I just went out and did some more readings.

Battery Voltage is 12.20 @ The battery. I run 4 gauge wire from the battery to an Aux fuse block on the driver's side. Reading 12.19 at the fuse block. Reading 12.06 at the headlight itself right now (my battery could have been down a bit when I did initial readings as it has sit for about a week or 2).

However....I checked the Voltage coming OUT of the fuse block itself and I'm getting about 12.09. So seems my "weak link" is the Fuse block itself. It's from Napa and one of the cheapies. Maybe someday I'll grab one from the Wrecking yard.

In my opinion the wire isn't the issue. The readings taken from the battery and at "the end" (Headlight) is not off by THAT much and considering the loss I get at the fuse block itself.....I'm happy

Update. Took the wire off the fuse block and stretched it to the 4 Gauge. The reading at the Headlight jumped to 12.10. So without the fuse block I would technically drop only about .09 volts. I can live with that lol
 
#12 ·
Find yourself some European spec (used!!!) rectangular headlights that use an H1 bulb (H4 if you can't find the H1) Try ebay.de but you have to speak (read) german! They most likely will have a city light bulb inside (a 3w parking light which looks pretty cool when only the parking lights are on) and illuminate your driving area very well. May not pass inspection in your state, that is up to you.

As far as the voltage thing….they are all 12v. The readings are from the battery (engine off) or alternator (engine running). The voltage you have (around 12v) makes NO difference on brightness of your headlights. It is the wattage, and the prisms in the lens. Good luck.
 
#13 ·
^^^ REALLY…….dont over complicate it!
 
#14 ·
LOL!

To a point you're correct. But as seen in the earlier post the High beams were using only 10.5 voltage so they might not have been up to their full potential of 55 watts. Increasing the voltage (to 11.75) increased the current thus enables them to get closer or top out at their rated watts. Same thing occurs when you start the vehicle. The Alternator starts putting out about 13.8-14.2 volts and you can see your lights get brighter.

From a visual experience there was a definite increase in the tone of light. Went from a pale whitish yellow to a very bright white color.

But to each their own :)
 
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