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Old 03-20-2015, 09:37 AM   #1
Join Date: Aug 2013
Location: Surrey, BC
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Red Light in Power distribution centre

I have a red light on next to one of the 12 volt fuses in the power converter but the fuse is good and there is 12 volts coming out.

I changed the fuses around and only that circuit stays lite whether a good fuse is in that spot or not and I have tried to check their web site for trouble checking info but nothing.

anyone have a better idea on what the problem is?

Lorne M.
Lorne M.
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Old 03-20-2015, 10:29 AM   #2
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Think that LED light circuit is in parallel with the Fuse. Under normal operation meaning a good fuse it resistive path is lower
than that of the LED circuit thereby restricting current flow to the LED and the LED does not light. However when the fuse blows basically that resistive path of the fuse goes to infinity and current follows through the LED path lighting it up.

Since you say the fuse is good and the LED is also lit tells me that the resistive path through the fuse is high enough to cause current to flow through the LED lighting it up. You had not mentioned if this was always like this or just started?

Could be a bad connection of the fuse clip to the board causing a higher resistive path. Again my guess is that the fuse path even with a good fuse is higher than that of the LED path causing it to light
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Old 03-20-2015, 10:35 AM   #3
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^^^ What PARAPTOR said.... You might want to check the solder connections/crimp connections on the fuse panel for that circuit as well as check to make sure the spring clips that hold the fuse are tight. A loose clip or a bad solder connection could cause the LED to be pulling power where it otherwise would only flow through the fuse and the LED would be out.

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Old 03-20-2015, 04:00 PM   #4
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I wonder if a loose connection/open could cause that too? I would try a different fuse and possibly try to crimp the terminals a bit tighter first.

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Old 03-21-2015, 12:07 PM   #5
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I had this issue on my trailer. I took it in and they said it was a loose connection where the fuse slipped into the slot. I figured as much because I could push on the fuse/breaker panel and make the LED go out.
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