What would cause this?
Stellar HDF Member
Joined: Jul 2017
Posts: 3,336
Likes: 1,281
From: Ky
12 volts is 12 volts. An incandescent bulb can get brighter when bumped, but usually doesn't last long after that. An over brilliant led is beyond me. Id suggest checking voltage at both spots with the lights on.
Road Captain
Joined: Aug 2016
Posts: 696
Likes: 487
From: Southern Indiana
I am thinking maybe something shorted a hot to ground at that light and somehow is sending 24 V to that light. That would cause excessive brightness.
I also have the Sunpie lights, for three yrs., no problem. Also I added harness to keep passing lights on with high beam.
I don't know about the construction of them but I assume they would take 24 V without burning out.
It is very possible that you just have a bad light. I would try to confirm that with an independent power source before spending to much time tracing wiring
To troubleshoot, you could hook each light up independently to a 12 V batt. and compare brightness.
Banned
Joined: Jul 2009
Posts: 7,406
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From: Straight Jacket Memories and Sedative Highs
How are you getting 24 volts from 12 volt system? Not expert on LED construction, so I am curious how this is possible
normally if 2 wires touch voltages goes to zero.
normally if 2 wires touch voltages goes to zero.
Last edited by Zerk; Jul 5, 2020 at 11:25 AM.
Road Captain
Joined: Aug 2016
Posts: 696
Likes: 487
From: Southern Indiana
I know that if you hook two 12 V power supplies in series you get 24 V.
My conjecture was that you have 12 v to light on hot wire and ground to ground, completing circuit, If another 12 V source shorted to ground it could send another 12 V in series to equal 24 V. The more I think about it, this is unlikely and you should probably ignore this theory. Just trying to imagine what could cause the light to be super bright...first thought was more voltage and how that could happen?
Have you checked voltages? and swapped lights to check if same result with different light? I am curious to find out the outcome of your dilemma.
Just realized you are not OP with problem, hopefully he will let us know result.
Please let us know what you find out?
Last edited by RHD51; Jul 5, 2020 at 01:40 PM. Reason: realized not OP
Outstanding HDF Member
Joined: Jun 2011
Posts: 3,126
Likes: 550
From: Springfield, IL
I would lean towards a ground issue, check wires on both sides to verify they are not comprimised the hot and ground should carry/be able to carry an equal load.
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Banned
Joined: Jul 2009
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From: Straight Jacket Memories and Sedative Highs
Maybe poor connection + or ground, could cause lower voltage to one light. Measure voltage. People fixate on grounds, takes two to tango. Swap the lights to see if it is not the light itself. Also as said, it could just be an illusion.
If the dimmer light seems ok, it may just be an angle. My wild guess if bad voltage it would be big difference. Maybe so darn bright even dim, is bright. Kinda doubt, but never know..
If the dimmer light seems ok, it may just be an angle. My wild guess if bad voltage it would be big difference. Maybe so darn bright even dim, is bright. Kinda doubt, but never know..
Last edited by Zerk; Jul 6, 2020 at 11:06 AM.
Stellar HDF Member
Joined: Nov 2005
Posts: 3,183
Likes: 836
From: KMHT KFMY
poor ground, poor 12V connection, defective light.
As said above swap side to side, that will tell you if it is defective
If the former left light goes bright in the right harness, start looking at the ground ( you could ground it with a jumper wire) and measure the supply voltage making sure it is the same side to side.
If the ground is good, and the voltage is good, and one is still dim after swapping, you have a defective lamp
As said above swap side to side, that will tell you if it is defective
If the former left light goes bright in the right harness, start looking at the ground ( you could ground it with a jumper wire) and measure the supply voltage making sure it is the same side to side.
If the ground is good, and the voltage is good, and one is still dim after swapping, you have a defective lamp