General Boards > Technical Support
Headlights not working??
Roger Milne:
--- Quote from: Steve Huber on October 14, 2025, 02:41:56 PM ---I wrote them up so if you have ?s let em know and hopefully my memory won't fail me.
Steve
--- End quote ---
Oh awesome. I may have to call on your expertise then. I’m pretty sure at this point he has done the mod’ but added to it by installing a LED bar. I didn’t see the mod’ until after I had pulled the wiring out for the light bar and now I’m realizing I may have taken the dimming mod partly out too so now I have to figure out what part of the mod’ I need to take out to finish the retrograde correctly and go back to stock. Not that the mod’ isn’t a good idea but I’m so over this RV wiring from all the hack jobs the PO did that I’m simplifying as much as I can back to stock so I can see what’s right and what’s the POs hacks. I’ve found several fire hazards from his hack work.
Steve Huber:
If he added 2 relays, he probably installed the mod.
Steve
Joel Ashley:
Just in case you haven’t seen it as an augmentation to the diagrams Steve referenced, Roger, a great video (or two) was created years ago by BAC dependables, Roy and Bill. It can be searched on YouTube as “Brighter Headlights for Your Beaver Part 1” by Bill Sprague. Other videos exist, but… you know… these are Beaver people after all 😉.
Joel
Eric Maclean Co-Admin:
Roger
it is not uncommon to find the Day Time Running lights disconnected or deleted on a vehicle with LED headlight bulbs installed ,the reason is that the DRL systems usually feed both the high beam and low beam headlights through a resistor to achieve a dimmer out put as to not blind on coming traffic .
Unfortunately when LED headlight bulbs are installed they draw much less current than did the incandescent or halogen bulbs did ( which is a good thing )
But with the lower current draw the in line resistor in the DRL system no longer can create the volt drop required to cause the headlights to dim and in effect now both high and low beams are on at full intensity which creates a problem.
One would think you could install a larger resistor to cure the problem but one would be wrong as LED head light bulbs are not dimmable they have a working voltage of between 8 Volts and 18 Volts if you go below the 8 volts they simply shut off ( they are either off or they are on at full intensity).
This is why you will discover the Day Time Running lights have been disconnected.
Hope you find this helpful
Eric
Roger Milne:
--- Quote from: Joel Ashley on October 15, 2025, 02:49:29 AM ---Just in case you haven’t seen it as an augmentation to the diagrams Steve referenced, Roger, a great video (or two) was created years ago by BAC dependables, Roy and Bill. It can be searched on YouTube as “Brighter Headlights for Your Beaver Part 1” by Bill Sprague. Other videos exist, but… you know… these are Beaver people after all 😉.
Joel
--- End quote ---
Thanks, I have seen those videos and were very helpful. My problem though is it appears on my year and model, he didn't add the wires in at the fuse panel, but tapped into them somewhere in the wiring harness under the dash. Which I can understand as it might have been easier from a access standpoint, but unfortunately in my haste to remove some of his shady wiring I didn't realize he piggy backed his wiring for the light bar onto the bypass mod' and so now I'm trying to figure out what circuit he cut.
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