I recall years ago a mod that allows Lightnings to run both High and Low beam at the same time. i have found a kit for Chevy's but not for fords. I have searched and not heard a mention of it. Does anyone know of a kit. I'm getting ready to take the lightning on a 3000 mile road trip and want the extra light.

I have already seen the mod to keep the fogs on...

 

A couple of things:

All you would need to do is energize both signal wires from the switch to turn on both High and Low beam relays, although I would not recommend doing this.

You will need to upgrade the ground wiring to the bulb to handle the current load of both filaments, This includes the ground contact inside the bulb itself because it's only sized for use with one at a time (which I don't think can be done).

The bulb is not designed to handle the heat from both being on at the same time.

 

If this helps...

On my 2000 'L' I installed high output lamps into the stock headlight units.
Result was melted plugs on the back of the unit caused by increased loading.
So stock lamps re-fitted.

On my 2003 'L' I have the HID conversion.
Result - I can see where I am going now

 

Try to find a Sylvania HID kit. Both HID and H9 high beams are on at the same time.

Best thing I ever bought on my truck.

 

click on the tech articles on the top of the page and the article is right there

 

+1

You can also keep the fogs on and in the country roads this set up it second to none!!!

 

There is a product called Brite Box that does it, I have been running one for a year now.

 

me too but for three years. i've lost my link to find the product on-line though. simple plug and play kit.

 

This is where I got mine however it isn't listed anymore.
I would contact them if one were interested and see whats up.

http://motorhaven.autoanything.com/?cat=43

 

I know this is a very old post, but it is on the top page of google results for this question.
So for those of us who still find this information relevant here's the answer.

Don't go buyin any bright box, all you need is 2 inches (if that) of wire

This mod is for people who have changed their headlight housings to use separate high and low bulbs, or HID Hi/Lo bulbs where you need the HID's to stay on, and the high to trigger the coil. If you use this with (typically stock) dual filament bulbs they will overheat & burn out quickly.

Legality is somthing else. Personally if I'm driving with my high's on it's because no one is in front of me, so what's the harm with having a little more light? and when a car comes, you shut them off.

This is called the Hi&Lo or Quad Lighting Mod. As a result of this mod if you're vehicle is equipped with fog lights that shut off when you switch to high's, they will remain on now too. That is called the Bambi Mod.

This procedure was done in a 04 F150. This will be typical for most Ford trucks, and the principal works on most cars/trucks of other manufactures too (explained below)

First remove the multifunction switch from your steering column.



On the F150 there will be 3 connectors for the signals, wipers, and the high's and low's.

Looking from the back, the connector you need will be the one on the bottom left. Simply jumper the top two red wires.



In the F150 these feed relays and not the lights themselves, so I used 16 ga wire and haven't looked back.

This works because the low beam relay is powered by the top red/black wire, in the low position, power is fed from the main headlight on/off switched red/yellow wire to the low beam (and fog) relay(s).

When switched to high, the red/yellow instead feeds the yellow high beam relay wire. This shuts off the low/fog relays. Jumpering the two red's keeps the low/fog relays fed when switched to high beams.

The Blue/Orange wire is a constant +12V allowing momentary flashing of the high beams regardless if the headlight switch is on or off.



The principal is the same on most other vehicles, including newer computerized models as switching is done before the SJB. All you need to figure out is what wire feeds the low from the swiched headlight wire and join them together.