Not my (recent)experience.
Can't remember if I posted in this thread or another, but I recently fitted a pair of Philips Ultinon LED H4s to my D1.
Difference is (pun intended) night and day.
No other change made, and I thought of adding a new self made relayed system as an alternative.
Brightness appears to be at least double the poor underpowered 55/60's I had(still have).
I also made the comment in whichever thread I did post in, that my volt meter with the lights on now sits at a steady 14.0v, whereas with the halogens it used to sit closer to 13.5-13.3v(this is obviously with the Tdi running).
Never really checked with engine off, but this is unimportant to me, as I rarely do that anyhow.
While I was doing the change I also changed the park lights(the T10 press in bulbs) to LED types too.
They, in themselves, look like headlights when on by themselves too.
I think you're right in that the D1's do have a relayed setup, and relays are in the engine bay fuse box(haven't really checked properly yet)
.. but the wires to the 3pin plug are dinky at best, and I'm imagining that they aren't supplying what they did when new.
ps. I do vaguely remember that the defender is setup to power the lights directly from the light switch too ... I'd be doing the loom upgrade just based on that setup alone. Can't imagine the light switch lasting too long running all that power through it.
I had a '79 RRC way back and I think it had the same system, and I changed it pretty much straight up after I got the car too.
But I'm with Vern in my thinking about LED H4 replacements. The Ultinons run at ~13W each globe, so 26W per pair. The low beam is a separate chip to the high beam chip, and so they're mutually exclusive.
So they only, and always, run at 26W per pair ie. Not 13W(low) plus another 13W for high beam for each globe.
Compared to a std halogen 55/60 setup, those globes try to draw 110W(per pair) at any one time, and obviously sometimes more.
So just like Vern estimated, that's only 1/4 the power(or current) requirement, and if those dinky, barely 4 amp capable, wires can supply those 4 amps(ie. 2 amps each line) then the LEDs should be running fine.
.. and this is what I see.
I need to measure their current draw one day, just for my own sake.


 
					
					 
				
				
				
					 Reply With Quote
  Reply With Quote Originally Posted by PAT303
 Originally Posted by PAT303
					
 
						
					 
						
					 
						
					 
						
					 
			
Bookmarks