Sorry but posting is going to be all over the place, or nothing at all for a while. I have to keep changing from one thing to another while waiting for parcels to arrive due to the lock down still on in my state. Longest running in the world now!
Anyway, rather than waiting until I can show completing things in a logical order, I can post as little thing get done in the meantime.
I ran into a problem when I tried the new H4 LED headlights for the first time. They would not change from low to high after converting from the donor twin bulb setup. Fortunately help from good friend at Jeep R Us, Richard Curly, suggested to try a CANBUS Error Cancelation Module, preferably one that works with Jeeps PWM, Pulse Width Modulation, system. I found these from STEDI and it fixed the problem completely. https://www.stedi.com.au/h4-canbus-cancellation-module-for-led-conversion.html I have mounted them to the radiator support as these do generate heat.
I wired the DRL, Day Time Running Lights, as my parkers as only use them while driving at dusk, dawn and foggy conditions. Before adding the module they would strobe once turned on, but for some reason that got fixed as well which is a bonus.
The NARVA inserts use a LED projector for low beam. Notice also that my LED indicators are also glowing dimly which they shouldn't. Adding a 6 Ohm load resistor fixed that.
When on high beam the low beams remain on as well. The lights give a very clean cut off so wont blind oncoming drivers.
Just as a random aside, we recently bought a new family car, our first with LED headlights. They do have a very cleanly delineated line where the low beams are "cut off" at the top. However, I've found that I don't like the qualities of the light produced. While it is very bright and piercing, it also seems "thin," like skim milk rather than whole milk, and cold. I find it irritating and wish I could change the bulbs to something more full-spectrum.