These guys have a 9007 headlight pigtail upgrade harness that puts uses heavier gauge wire and relays to make your headlights brighter/more efficient.

http://www.blackclouddiesel.com/Ford...f/lighting.htm

It looks like it's a real step up from factory wiring. Anyone tried this?

(They also have a heavier gauge pigtail for factory driving lights.)

I'm considering getting this for both my F150 and my Crown Vic.

 

I used a similar harness (from another manufacturer) for a number of years on my '97, '99 and '02 trucks with higher wattage headlight bulbs. It did seem to prevent the "harness Chernobyl" problem that folks simply adding higher wattage bulbs pretty well all experienced. It also beats a home built version of the same thing. Overall, I'd give it a thumbs up if you're running higher wattage bulbs. Make sure you seal off the one open end / connector of your OEM harness that is left over after you put this one in though.

 

Looks to be the same one I ordered from Pure Diesel Power
http://www.puredieselpower.com/catal...ade-p-117.html

This is made by Defuser ( www.defuser.com )

Few things I did in prepping the harness :
1. Driver's side ground wire was a bit too tight for my feeling when installed, so I cut off the ring terminal, soldered in a longer lead, and crimped a new ring on the end of it.
2. I did not like the fuseable links for the power protection ( if one blows, where do you get a replacement on the side of the road ). I cut the connector off the power side, soldered in a new fuse holder ( the type that are build your own, pigtail version ok, if large enough wire ) and put this to a commin 10 WG lead for a single battery hook up.
3. Took off the crappy plastic sleeve material they used for the harness, laid the harness out under the radiator cowling, and re tapped the loom to the bends needed using loom wrap, and used abrasive type where it passed around the hood release, and cross over areas ( above the headlamps where I routed it ).

That is about it, minor changes when compared to finding the parts to DIY the whole thing.
One other thing I did was to take one of the factory Sylavina bulbs I have ( SilverStars in now ) and break the capsule that the bulb is in ( gloves, lineman's pilers, and under the lid in the garbage can, to stop fragments from taking me out ). I got the bulb ends trimmed flush, and used liquid electrical tape, to build up where the bulb was at, and layered in this, until flush ( first make sure you don't have them shorted in the housing when trimming ), and then dunk the whole thing in the rubberize it can ( HD has this ), to make a "filler plug" for the factory head lamp socket not used ( only one side plugs in the facotry harness ) to protect the unused one from weather damage ( for return to factory operation ).

I still have to figure out the resistance of the facotry harness ( busy @ work, and riding has been more and more often, now that the snow stopped ) vs. aux one, to see what the real specs are ( defuser's little write up does not tell much in terms of what was tested ).

Here is the last thread that I know of, on the topic :
https://www.f150online.com/forums/sh...d.php?t=267542

 

SSCULLY,

Your solution to the "open connector" problem sounds so much more elegant than the one I used - which involved packing the connector with Dielectric Grease, then bagging it in plastic and sealing the bag to the harness with electrical tape. Great idea!

 

Form follows function.
A to B is the same, elegant is for us girls that read Cosmo & Ophra mag

Sorry I have to go Manscape my truck a bit more now, I think it has a piece of something hanging from the mirror

 

LMAO!