I'm going with these on my 1978 F150 Custom:
There's a old write-up for when these first came out:
Coco gets a set of Trucklite LED headlights - Page 6 - ClassicBroncos.com Forums

 

I concur on the heavy duty wiring harness upgrade. I installed mine last week and I'm very pleased. The lights went from dim yellow, to bright white/clear. I had planned to upgrade the headlights, but see no need now. I imagine if I had upgraded the headlights without the new wiring harness, I would have been disappointed.


I felt kinda stupid when I saw the simplicity of the new wiring harness. I should have thought of this years ago and just made my own harness for several vehicles I've owned.

 

Where did u buy harness?

 

I ordered the replacement headlights from LMC, put some Sylvania nighthawk bulbs in. I also put in the upgraded harness. The lights are brighter and more crisp than some newer vehicles! Very impressed.

 

You can make a harness around an appropriate sized relay. Yes, the power from the headlight switch is used to energize the primary circuit of the relay, and then the secondary side of the relay powers up the lights, usually using thicker wire. The advantage is the thicker wire, and the shorter run between the battery and the lights.

I did this, using a junkyard relay, to the fog lights on my Mustang, and it made them brighter, as well as it stopped the lights from clipping the circuit breaker in the main light switch.

 

Another vote for headlight relays. I sell a kit through Wild Horses, but have also built my own. If you're comfortable with wiring (sometimes even the basic stuff is intimidating) then making your own is fun and rewarding. If you're not, then really a 30-40 buck investment in parts already made is well worth it.

As for the Hella E-code headlights, I used to be a huge fan and would recommend them to anyone. Big bang for the buck and sweet performance. Now I'm not so sure.
It's a great company with many parts manufactured right here in the US with high performance in mind.
But I've had two sets now that are junk. They look the same as my old ones, they have the same part number, they still appear to be of good manufacturing quality standards, but the light output is garbage. Massive difference between my old ones and the new ones.
Gone is the razor sharp low cutoff with the nice upward angled light to the right. Back is the crappy nebulous blob of light in front of the vehicle.
I'm going to try some LED's in them anyway, but in reality I'm looking for different housings.
Been meaning to call them on it and ask if they know of a solution. Just been lazy and have not made the call yet.

So my current recommendation is to hold off on Hella rounds until you hear from someone that's got a recent set and loves them. Maybe I just happened to get two bad sets, but that seems improbable.

I did a headlight-shootout about 20 years ago and the Hellas in my Bronco and the Carrello rectangular ones in my '79 are what I ended up with after trying out 7 or 8 brands back-to-back. Best of the H4 best back then.
More options these days.

Paul

 

Jegg01, you can get them at LMC, Jeff's Bronco, and other places for $30-$35. I can make the harness, and enjoy doing that kinda stuff, but it's just too easy to buy it.