Stravafred said he is using the upfitter harness which I thought was to prevent both high and low beam from being on at the same time. I only ask as I am using the exact same setup but I do not have the loud humming noise and need to understand if I need to change my setup.
Great point. We must have missed that in the first look and appreciate you catching it.
How long would you have to run both high/low to cause the damage? I'm running the old harness (I have the new one but haven't had time to install yet) and have once or twice accidentally had both on for about 1/2 second or so. They appear to function normally, so I'm doubtful there has been any harm. But I'm just curious what it would take.
Right, as mentioned, I’m using the upfitter wiring harness to prevent simultaneous hi/low activation. Here is the harness part information copied from my purchase invoice:
Honestly, it seems to vary. Just try your very best not to. I'd be willing to set you up with a great deal on a new harness if you are open to switching to the current harness. PM me if you're interested.
Ok, tough situation. They shouldn't be buzzing at all. That in of itself makes me want to suggest you send them back this way for eval. But I know that is a pain in the butt for you to do. You are welcome to send them back, but I don't think there is any harm in them buzzing other than the fact they shouldn't and it sounds terrible. You can always PM and we can discuss options.
I've got the new harness. I just haven't had time to put it on. I'll get to it. I've only accidentally done it once, possibly twice, but I knew it when I did it so it was probably for less than a second. They're functioning just fine. No noise that I've detected.
After further review, it seems the buzzing noise goes away after I start the engine. It's hard to tell due to the diesel engine noise, but that's what's up. I guess it's not getting full juice without the engine running.
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Ah, well that explains it. Without the alternator running, the voltage will quickly drop and can often cause buzzing. Usually my first comment is that the lights will often buzz when not getting enough power - which is usually caused by not having the engine running. Could have sworn I heard an idle in the video.
To power up instead of, or with the factory fogs? Even without the factory fogs, the LP4's may be bordering on the maximum amperage of the fog circuit.
