Headlight Booster Harness

[Marino4x4]

I was looking around on the 4x4direct website and came across the Headlight Booster Harness they sell.

h4-harness copy.jpg (60.06 KiB) Viewed 1898 times

This got me thinking if it is necessary to get these for my 1998 4.5 GL? Is the wiring of the car good enough or will the harness make a noticeable difference to my headlights? My car got the bulbs in that I bought it with. I am not to sure what the watts of the bulbs is. Has any one done the replacement of their lighting harness?

Thanks

[Tinus lotz]

Dont they use that product when much bigger bulbs are used?

[Marino4x4]

As far as I have it, if you have a 55w, 60W, ..., 100w, 130w bulb and you wires is old or to thin, they will not shine as bright as with wires that can conduct the current better. I am mechanical, thus asking the peoples that knows more about this.

[Herrie]

Even if I change the Bosch with Hella relays for the spot lights then the bright is different - much better with the Hella!

[Tinus lotz]

It comes down to ohms law.....lol but if you put it just put big globes in anyway

[Riaan Harding]

I was looking around on the 4x4direct website and came across the Headlight Booster Harness they sell.

h4-harness copy.jpg

This got me thinking if it is necessary to get these for my 1998 4.5 GL? Is the wiring of the car good enough or will the harness make a noticeable difference to my headlights? My car got the bulbs in that I bought it with. I am not to sure what the watts of the bulbs is. Has any one done the replacement of their lighting harness?

Thanks

Hi Marino

What is the price on the wireing booster and were can you get it ?
we are also busy trying to make proper ones for HID and 55w + hella lights
Regards
Riaan

[Marino4x4]

Hi riaan.

die harnas is te koop by 4x4direct.co.za. Dit kos R285 met vat en posgeld is R35. Ek het maar die plunge gevat en n harnas bestel. Ek sal terugvoer op die post sit as ek dit gekry het. Dit behoort Dinsdag hier te wees.

groete.

[Chris Skinner]

Tinus - thanks for the prompt about OHM's law - its all about voltage drop at the actual point where wires connect to the globes. I am no expert but "Google is your friend" .... !

I suggest when engine running and lights on bright, measure your voltage at the battery, and also at the point where wires connect to the bulbs - if there is a voltage drop (more than about 0,2v = about 5% loss in light efficiency) then you are losing energy in the wires - then you should upgrade the wires and possibly the relay.

Found an article on the web, heres a short extract:

In many cases, the thin factory wires are inadequate even for the stock headlamp equipment. Headlamp bulb light output is severely compromised with decreased voltage. The drop in light output is not linear, it is exponential with the power 3.4. For example, let's consider a 9006 low beam bulb rated 1000 lumens at 12.8 Volts and plug in different voltages:

10.5V : 510 lumens
11.0V : 597 lumens
11.5V : 695 lumens
12.0V : 803 lumens
12.5V : 923 lumens
12.8V : 1000 lumens ←Rated output voltage
13.0V : 1054 lumens
13.5V : 1198 lumens
14.0V : 1356 lumens ←Rated life voltage
14.5V : 1528 lumens


The Europeans take a slightly more realistic with their voltage ratings; they consider output at 13.2v to be "100%". The loss curve is the same, though. When operating voltage drops to 95 percent (12.54v), headlamp bulbs produce only 83 percent of their rated light output. When voltage drops to 90 percent (11.88v), bulb output is only 67 percent of what it should be. And when voltage drops to 85 percent (11.22v), bulb output is a paltry 53 percent of normal! It is much more common than you might think for factory headlamp wiring/switch setups to produce this kind of voltage drop, especially once they're no longer brand new and the connections have accumulated some corrosion and dirt.

Its a very interesting article - for a better understanding read it here: http://www.danielsternlighting.com/tech ... elays.html