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-   -   LED light bar blowing fuses (https://www.f150forum.com/f83/led-light-bar-blowing-fuses-421739/)

Van_buren81 07-18-2018 02:25 PM

LED light bar blowing fuses
 
I just wired a 20 inch light bar onto my brush gaurd and it blows the fuse as soon as I hit the switch. It's a 120 Watt bar and I'm using a 5 pin relay, a 3 pole switch, 10 gauge wire into the relay, leftover 16 gauge wire from the relay to the switch, and a 30 Amp in line fuse off the positive terminal of the battery. I don't know much about wiring and it didn't come with any instructions or diagrams. Any help is appreciated.

Ryan_2020 07-18-2018 02:52 PM


Originally Posted by Van_buren81 (Post 5849820)
I just wired a 20 inch light bar onto my brush gaurd and it blows the fuse as soon as I hit the switch. It's a 120 Watt bar and I'm using a 5 pin relay, a 3 pole switch, 10 gauge wire into the relay, leftover 16 gauge wire from the relay to the switch, and a 30 Amp in line fuse off the positive terminal of the battery. I don't know much about wiring and it didn't come with any instructions or diagrams. Any help is appreciated.

Well a 120 Watt bar shouldn't be blowing a 30 amp fuse in normal operation, I would guess a bad ground.

N2OPONY 07-18-2018 04:20 PM

Has to be a short somewhere. Check all 12V cables make sure they are not touching ground. Could be a bad switch or maybe a bad relay.

JerseyGray 07-18-2018 04:41 PM

Absolutely a short/ground. Do you own a meter ?

Van_buren81 07-18-2018 04:47 PM

I don't. But it sounds like I'll be buying one hah


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